Python stack calculator. part without any ISBN number being inputted.

Python stack calculator 3. cdf(x) # So far I have got: def evalPostfix(text): s = Stack() for symbol in text: if symbol in "0123456789": Skip to main content is a bad idea everywhere. It does not work for any float numbers. 3 Shell. relativedelta # current time date_and_time = datetime. split () stack = Stack () for exp in expression: if ex RPN Calculator, also known as Stack Calculator, is a special type of calculator in which there must be two operands before an operator in an expression. Does some standard Python module contain a function to compute modular multiplicative inverse of a number, i. I am facing issues with calculating the number of days between the first date of current month and Today's date using Python? 1 Convert datetime (e. display((Calc. I am new to using both tkinter and python, and I am trying to create a GUI window thing that calculates the total cost of a date night, with different options for travel, entertainment, etc. However, it fails to replicate the exact values from Binance trade history. time (signal output) graph in python. If the stack is high, it means that the computer stores a lot of information about function calls. I made good progress on a python tkinter project that was intended to code a calculator with tkinter. the Information Gain is defined as H(Class) - H(Class | Attribute), where H is the entropy. cdf(v1, m, s) How to build a function in Python (Jupyter) for calculation of Point Spread Function (image processing?) in all of these it was image data. Create a class definition called 'calc' which is a calculator that supports these operators: +, -, *, / It should have the following methods: def firstNumber(self This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. Thanks for contributing an answer to Stack Overflow! Python 2. text1))) Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Visit the blog I am using Scikit-learn for text classification. However I am nowhere near that number. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers By the way, there is a problem with your grade calculator as shown here because all valid grades will turn out to be an "A", since all valid grades hit the first I essentially need to make a simple calculator, that, when two sides are entered, it produces the third. If the user attempts to enter a tip, nothing In Python 3. Imagine a stack of plates where you can only take the topmost plate, and you can only add new plates on the top. in weka, this would be calculated with InfoGainAttribute. Count occurrence of items in column depending on I'm new to python and tkinter. self. I want to calculate the Information Gain for each attribute with respect to a class in a (sparse) document-term matrix. Provide details and share your research! I am trying to create a calculator and use defensive programming to avoid unexpected events and user inputs. Got a little confused somewhere down the line. stats import norm # cdf(x < val) print norm. Money Tax and Tip Float Complication. " when Alright, I'm just starting to learn python, and have no idea where else to pose this question. This calculator accepts four operators: +, -, *, /, This is the first ti Skip to main content. Use Python 3 instead. I tested both functions, and they seemed to work right. For calculating dates and times there are several options but I will write the simple way: import datetime import dateutil. The method only takes up constant memory (like iteration). First is the token order as explained by Jean-François: the longer tokens must be defined first in lex (ref from ply doc. Stack Exchange Network. When I input the division operator to calculate a zero division, my loop is not taking me back to input the number. If you quit from the Python interpreter and enter it again, the definitions you have made (functions and variables) are lost. Calling your lambda function is equivalent to calling this function: def foo(): return egal If you're not using numpy, the obvious way to calculate the arithmetic mean of a list of values is to divide the sum of all elements by the number of elements, which is easily achieved using the two built-ins sum() and len(), e. random. What you need to do is proper dynamic programming. Ultimately, I need to calculate the averages of multiple time durations. :P Yay for float/decimals! I'm making a factor calculator. When n == 10, you check and see if it's divisible by 2 assuming that's the best step, which is wrong in this case. I started learning Python yesterday; this is the first calculator I've made. All the buttons work perfectly except the "equal" button that shows nothing here's th This question stems from my previous question that came up while learning Python/CS using open courseware from MIT. system(r'dir')". py Generating LALR tables calc > 2+3 5 calc > 2+3,4+6 5 10 calc > 2,3 2 3 calc > a=2,a+7 9 Share Improve this answer Follow rici 241k 29 So I have completed a python program which can essentially make a calculator work in real life, i. i have the firmware update installed on my daughter's HP Prime and it works. std() with no additional arguments besides to your data list. Java, C, C++, and Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; python Calculate with list items. I would suggest trying this approach since your data contains lists. deque queue. To get the inputs into calculation(), I tried I'm very new to programming in Python and most of the answers I have searched for are more complex versions of the script than I am looking for. I want it to calculate number of days between now, and fixed time in future. To get number od days, or months between two dates I use datetime , that you can see in my code. zip - 741 B Introduction Through this article, I wish to demonstrate creating a Reverse Polish Notation (RPN) Calculator which can be used to evaluate postfix expressions. my code will do this: >>>3*6 >>>18 So, this works very much like a real calculator EXCEPT for the fact that a calculator would print it out on the same line (talking Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand pls someone tell me py def pareto_front_idxs(costs: np. Viewed 16k times -3 . The problem occurs when you execute that code with Python 2. The way ArcGIS Desktop divides integers will result in an integer, so percentages will always end up as zero (e. std(< your-list >, ddof=1) The divisor used in calculations is N - ddof, where N represents the Think about what your calculate_dates function is doing. But there is some problem in the while loop. Otherwise, maintain a stack. Population std: Just use numpy. This program is supposed to be a calculator. Do you know a python function that would allow me to calculate these 3 parameters? The 3 parameters are defined as follows: Rise time = time to go from 10% to 90% of the 'on' power output values How to calculate the monthly fee on a loan? Given is: a: an amount to loan. As per AlexanderLekontsev's answer, you don't need a huge big ifelse ladder that always computes result and prints the output. 0 to the end of the 100 (and add an int() statement as well). This is the code: print(" Stack Overflow for Teams Where developers Is there a modulo function in the Python math library? Isn't 15 % 4, 3? But 15 mod 4 is 1, right? Skip to main content. If p3 value is greater than balance value,prints the balance value . EDITZ: I've figured it out. I'm just wondering how you see this problem. anything else means don't loop. Input: str = “100 200 + 2 / 5 * 7 +” Output: 757. I'm lagging in logic that the following basic script should not ask to enter the input of A and B even after giving the irrelevant numbers that's greater than 5. Python - Calculating in dataframes. And I want to add comma button. The python cProfile and pstats modules offer great support for measuring time elapsed in certain functions without having to add any code around the existing functions. and prints the output. Basic Python calculator. As the comment in your example says, you're going to want to start with a for x in range loop. timedelta(hours=26, minutes=25, seconds=10) # calculate Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; Making a simple calculator in Python and not sure how to do nothing for else. now(). Note: squaring Pearsons-r, squaring pandas corr(), or r^2 have slightly different results than R^2 formula shown above, this is due to 'statistic round up' reasons refer to Max Pierini's answer. first generate an I'm building tkinter python calculator. Modified 10 years, 4 months ago. Stack Overflow. However, after I enter 'metric' or 'imperial' and press enter, the program closes. :) All I had to do was add a . I think I need to re-define I am fairly new to python programming. And since you are returning a value, you must assign the output of multiply() to a variable. Not the p3 value . today() time_only = datetime. Improve this question. 5. in the display of your calculator. one = Button(master, text = Calc. datetime. Most of the code works fine, but I can't figure out how to take user input for the tip and incorporate it into the grand total. Ask Question Asked 9 years, 11 months ago. I apologize in advance if I didn't format this code properly, this is my second time using stack overflow, still learning. Using a for loop to calculate a meal price based on a range of tip percentages. In the below c function extended euclidian algorithm is used to calculate inverse mod. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers I have code to generate a postfix expression from infix and generate an expression tree from the postfix notation. (interests is calculated and added every month, 1/12 of the interest is added. But as we know comma appears in every calculator's window only once. Note that doing so, you will not have to change anything else in your This means when changing, adding or removing one, we need to touch more than one place. In a postfix operation, an operator appears after its operands. g. Provide details and share your research! But avoid Asking for help, clarification, or responding to other answers. For example: It's decent, but reviews of working code belong on CodeReview. You can use re. this is my list: Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; Python pandas calculate the percentage of the total. For example if you have a python script timeFunctions. I am done with nearly everything execpt the percentage. If you have normal distribution with mean and std (which is sqr(var)) and you want to calculate:. When I run the program it prints operation as this I'm not sure how to fix this. If someone could please tell me how I can make the "0" button fill in the gap between the ". I am trying to create a calculator which will solve simple equations given in reverse polish notation. 5. The bulk of my code goes towards addressing incorrect inputs, but I was trying to figure out if there was a way to add/ Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers Stack in Python can be implemented using the following ways: list Collections. Can't perform calculations on DataFrame values. python; Share. If the user types 'quit', I want the program to break, and if they enter a string rather than an integer I want the program to respond telling them to enter a number. Problem Statement: I am trying to calculate XIRR for a cash flow over 30 years in Python. time() # calculate date and time result = date_and_time - datetime. I tried to make a simple calculator, but what is the problem? def add(num1, num2): return num1 + num2 def subtract(num1, num2): return num1 - num2 def I am running into a roadblock and would appreciate some help on this. I have made very simplistic calculator: loop = 1 Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers I want to write a Python code that will evaluate an expression using stack. A. 1. I'm working on a calculator which calculates depending on how much you are spending, how much money you'll have at the end of the month. Python Pandas: Write a function to quickly calculate MAPE. For example, an infix expression like 25 + 12 would be written as 25 12 + in the postfix notation. The input format is split. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; I am trying to make a cosine law calculator in python. system, for example using this as the string: "__import__('os'). crc32('hello-world') -1311505829 Another So I'm new to Python and the first thing I started working on was a calculator. The Python interactive she Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers You have two problems in your lex file. Commented Dec 3, Calculate average python. What I have written so far is: print(&quot;Your date of birth ( Need to add a loop to my calculator by giving the user an option to restart the calculator by putting the code in a while loop with the condition that the input from user should be, 'y' or 'Y'. If there's anything you'd like to add, by all means. insert(0, stack[row]) You should really never insert into the front You can use f-strings for this: return(f'{integer_1} * {integer_2} = {answer}') This allows you to create your output statement without any string concatenation. 1) def thankyou(): print "Thank you!" It seems that python executes an expression from left to right and treats 'division' and 'multiplication' as equivalent. Just keep in mind that eval is not just for math. 0 In case the list elements are strings, one way to convert them is with a list comprehension: >>> s = ['1','3'] >>> . I am trying to make a calculator that Python has many different format functions, but perhaps the clearest is using f-strings, available in Python 3. 0, 11) in Python Using a variable class is very handy for your situation because it will allow you to update the text of text_box using by setting the content of this variable. I included a try/except block for user input & for zero division. Try Teams for free Explore Teams. One hacky way of handling this is to use lambda as you did earlier: . It will be easy to interact with your data and manipulate it from the console since you can visualise your data structure and update it as you wish. any(c>=max) else False for c in I am creating a calculator and in that I have used a while loop, so that the user can do the calculations again and again. LifoQueue Implementation using list: Python’s built-in data structure list can be used as a stack. sendall(data) is there a way to write data as: data = "03 2F 00 00 02 12 01" and let python know that I want what's in data to I am creating a text calculator that does not work completely conventionally. 1) def thankyou(): print "Thank you!" Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Python-Calculation with pandas data frames. I am fairly new to python and programming in general, I wanted to build a calculator which could handle multiple operations in a equation. Also, the calculator stores how many arguments the function takes in a dictionary. It works like this: Operation Input: The user inputs the operation the calculator will process (+ for addition, -for subtraction, * for multiplication, or / for division) Operand Input: The user inputs in each operand of the calculation, pressing Return between operands. : >>> l = [1,3] >>> sum(l)/len(l) 2. ): When building the master regular expression, rules are added in the following order: All tokens defined by functions are added in the same order as they appear in the lexer file. 66% off Learn to code solving problems and writing code with our hands-on Python course. My problem is that i can't perform I'm trying to create a basic 'calculator' that takes two numbers as input and spits the summation back at the user. randn(10000) # generate samples from normal distribution (discrete data) norm_cdf = scipy. I implemented multiplication and division, however an inde Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers When I was calculating the checksum manually i was doing something like this: data = '\x03\x2F\x00\x00\x02\x12\x01\x47' and then s. Simple calculator using python gui tkinter. In other words, you can't have on the end. You are getting your birthday, and then looking at how far the current time is from that birthday in the current year. Can you please suggest? Thank you in advance, Max new_operation = input(&quot;press enter to make a new operation or I am trying to create a python program for my Casio fx-9750GIII calculator that computes the molar mass of a given chemical formula. There are several tutorials online, found with Google. I want to calculate the profit and loss for each signal. sub with a lambda, and specified to only sub one time, in a while loop to continually replace subexpressions with their results until no operators are found. How to take a user input and apply in 'for’ I am trying to measure the rise time, power overshoot and settling time of a power vs. assume i have a stock price sequence and a buy/sell signal sequence. max(0) print(max) return [True if np. If I apply the difference on stringA, I should be able to get stringB. Learn Python from scratch with our Python Full Course Online, designed for beginners and advanced learners alike. My guess is I'm missing a parenthesis somewhere in the calculation. #!/usr/bin/python try : print " Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers $ python calc. 6k 7 7 gold badges 66 66 silver badges 62 62 bronze badges. The problem is, if I give it an expression like 45 / 15 * 3, it will give me the result 1 instead of 9, because it is solving the deepest levels of the tree first. Here is what I'm doing on my PC, >>> import binascii >>> binascii. I was hoping if someone could me out and provide me some direction. It was very basic, so I decided to give it exception handling in the event a user enters in garbage. 7. You may assume that We'll use two stacks for our calculator: Result Stack: To keep track of intermediate results. Therefore, if you want to write a I am trying to calculate the FWHM of spectra using python. What you intended was from math import mean which imports the mean function from the math module. We will start with a simple approach and then gradually modify it to handle more complex Basic Calculator II - Given a string s which represents an expression, evaluate this expression and return its value. I have the following code, where numStk is a stack that holds number and optStk that holds operators. Not a 10 times of balance. Visit Stack Exchange. from scipy. Replacing the final ^ with ** in power = Button(evenmore, padx = 16, pady = 16, bd = 8, text = '^', command = lambda:set_text('^')) will give you the correct result, but it will display ** in the display of your calculator. Because in this case balance value is lesser than minimum payment 'p3' value. Python 2 uses integer math, meaning that dividing two integer values will always produce an integer value (3 / 2 = 1). For help making this question Question: Calculate income tax for the given income by adhering to the below rules: Taxable Income Rate (%) First $10,000 0 Next $10,000 10% The remaining 20% Solution (that I did): income = int( Since this is school work I don't see a huge benefit in writing code for you, but here's how to break down the problem. This is essentially how a stack works. In Python 2, input evaluates the input you provide, so if you enter 1, then mainmenu is 1 (the number) and not "1" (the string), thus both of your if-checks fail and your code arrives at the sum= part without any ISBN number being inputted. SAGE), I want to do this in just plain Python. -- See my previous question here -- I am using the following code to make a list of month payments and other things. 2) your Stack is a linear data structure that follows the Last In First Out (LIFO) principle, where the last element inserted is the first one to be removed. Goal is given a positive integer n, find the minimum number of operations needed to obtain the number n starting from the number 1. Any suggestions I programmed a calculator with int operations. The thing is, I've done the visuals and I've created the calculator class which Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers I'm making Calculator for Peptide monoisotopic and have some problems that I cannot solve. norm. You are doing a greedy approach. It returns with 0 exit code, but nothing appears, no input no nothing. import numpy as np import scipy import matplotlib. log(x)/2) and got results that were comparable in accuracy to x ** . As I usually have a terminal screen open that is a natural place for me to ask such mathematical questions. If it's not a tuple, just return it as-is: Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about keepProgramRunning = True print "Welcome to [Removed]'s 2011 4-H Project! This is a simple calculator coded in Python, which is a high-level programming language. I have a set of points and would like to know if there is a function (for the sake of convenience and probably speed) that can calculate the area enclosed by a set of points. The len() function in Python 2 returns count of bytes allocated to store encoded characters in a str object. 5 works in general," [which, btw, is why I put it first] "but for more Input: str = “2 3 1 * + 9 -“ Output: -4 Explanation: If the expression is converted into an infix expression, it will be 2 + (3 * 1) – 9 = 5 – 9 = -4. As try-except should only be used in I don't know about the meaning of calculator mode in Python, and I've put the portion of documentation below. Viewed 970 times -2 . Making statements based on opinion; back them up with One way of handling this might be with regular expressions. Delta Degrees of Freedom) set to 1, as in the following example: ; numpy. This is what I have so far import math Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers ^is xor, use ** instead to raise a number to a power in Python. I'd like to generate the t-test on it, but was wondering if there was an easy way to do this with numpy/scipy. What I wanna do is to get sum of the list without for loop after splitting the given text by math symbols which the text as an example ** (1+3) * 3 ** should obtain the math priority for calculation. I must use while, ifHowever, I cannot use import. It should therefore not be used with untrusted input. I need to make it so You calculate the wrong p2 value ,p2 value is just a 10$ . This page was a good resource and told me that I my aim is to create mortgage calculator in python. Provide details and share your research! How to build a function in Python (Jupyter) for calculation of Point Spread Function (image processing?) in all of these it was image data. a,b=input("Enter two numbers (sperated by a comma): ") operator= I have the below code and when I type calculate(2, 0, "/") I would like to print "Division with zero" than just the output, when I divide with 0. Using the stack is convenient (like recursive call), but it comes at a cost: storing detailed information can take up a lot of memory. cdf(val, m, s) # cdf(x > val) print 1 - norm. Formula. ; Sample std: You need to pass ddof (i. I am trying to write a program that takes side "a" and side "b" and angle "C". ndarray): max = costs. SE, not here. 16. Python 2: It gets complicated for Python 2. # 1 means loop. It works perfectly. In the expression 2+3*4-6, at the end of for loop, numStack contains 2, 12, and 6; and optStk contains -and +. For example, take your birthday February 20th. Or using a 'for' loop In this task I had to create simple IP address / subnet calculator in Python. Note the f in front of the quotation-mark; that flags the string as a “formatted-string”. I tried cmath. The Calculator is suppose to determine an equal amount for each guest to OverflowAI; Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide Creating Testcases for python Calculator. Follow edited May 17, 2015 at 11:08. Your evaluation logic is off -- given these simple expressions, we're really only concerned with two cases, tuple or not tuple. Modified 9 years, 11 months ago. Variable Tip Calculator Inputs. Ask Question Asked 12 years, 4 months ago. What have I tried so far: However, no A basic stack calculator written in python. Darek Kay. It allows users to input mathematical expressions, converts them to postfix notation, and calculates the result. std() for:. calculator command-line command-line-interface postfix-calculator Updated Apr 6, 2019 Python QuantumWizard888 / fabula Star 0 Code Issues Pull requests A little Python calculator based on python console calculator I have a Python method that calculates the profit after taking into account the commission structure. py. I'm using regular expressions to parse out the original times and then doing the differences. I now need to calculate the average. Topics calculator command-line command-line-interface postfix-calculator Resources Readme License MIT license Activity Stars 2 stars Watchers 2 watching Forks 1 fork Report repository Releases No releases Python You should return grade whenever the given gpa reaches the standard for a grade being iterated, and return D only after the loop ends without a return: def get_letter_grade_v1(grade_scale, gpa): for grade, data in grade_scale. stats. Unfortunately I don't know how modules work on a I am a beginner with python and I am working with this project that will print the result of the students. 0. Logic for Handling Parentheses The stack will help us In this example you will learn to create a simple calculator that can add, subtract, multiply or divide depending upon the input from the user. Iterate the expression from left to right and keep on storing the operands into a Here are two functions to calculate distance and bearing, which are based on the code in previous messages and Compass bearing between two points in Python (I added a tuple type for geographical points in latitude, longitude format for both functions for clarity). See,in my code,the program will only print the percentage of the last person's marks. py: import time def hello(): print "Hello :)" time. After installing the firmware i was able to create with the connectivity kit a Python application first which then is transfered in 'Program' under the When you provide a function to the command argument, you need to provide the actual function, and not the result of calling the function. now() date_only = date. The stack The python cProfile and pstats modules offer great support for measuring time elapsed in certain functions without having to add any code around the existing functions. Your current problem is that there's no variable to keep the result, so I added a result as return value and a num1 outside of the function. i am just going through basic python tutorial and making a simple calculator in python but its not working. The name "stack" is derived from the analogy of a stack of plates, books, etc. import re aminoacid = { "I": "C6H13NO2", "L I have stuck with a problem of predicting how many operators are needed for call center to answer the calls (80%) in less than 20 seconds (in queue). Evaluation of Postfix Expression using Stack: To evaluate a postfix expression we can use a stack. Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Besides, programming ahead of the user typing invalid characters, such as letters when asked to type an operator or a number. kv and . I was thinking maybe it could use a summary at the bottom saying, like, "x ** . I thought this article was surprising and interesting. asked Thanks for contributing an answer to Stack Overflow! You are not calling your egal function when the button is pressed. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Visit the blog Some other things: 1) remove this line: import math as mean, which imports the entire math module and renames it mean. The integer division should truncate toward zero. 2016-01-01, 2016-01-11) to integer days (e. . If the expression only contains an integer, return that integer. For Calculating mathematical string using parsing method #Note: It works only for 0-9 numbers. Instead of push(), append() is used to add elements to the top of the stack-based calculator in Python, designed to evaluate complex expressions, convert infix to postfix notation, and handle variable assignments. Learn to code solvinghands-on I'm new to Python. I have created a function for the actual calculation functionality, calculation(), as well as a function to take the input, inputs(). When I put in grades I want it to calculate a GPA. you know the pdf of your data), then scipy does support discrete data when calculating cdf's. I have two strings: stringA and stringB. In this tutorial, we will learn how to evaluate mathematical expressions using stacks in Python. For example I bought ETH/USDT using LIMIT order at Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand I want the exception to print "This input is invalid. Also, even if eval was reasonable, using Python’s parser to evaluate arithmetic completely misses the point of Can't figure out the algorithm for calculating correct answer. Operation Stack: To store the sign (either + or -) before and within the parentheses. It works for all python expressions. This I got to do this calculator on python 3 that must execute on loop until the user types exit. In this case I suggest you use the version of range() that takes both a start point and a stop point (begin, and end) -- note that this will iterate over I need to implement a simple calculator, that can perform the following three operations with the current number x: multiply x by 2, multiply x by 3, or add 1 to x. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, and the other Python calculators on this website seem kinda different from mine, I'm looking to generate some statistics about a model I created in python. e. Pearson coefficient calculation using Pandas in Python:. I noticed that the last lines of code that print the equation's result are repeated. cdf(v2, m, s) - norm. I wrote this calculator and it works. So far I managed to manage interpolation of Download rpn. To do this I need more methods for strings from curses. I'm trying to calculate/generate the CRC32 hash of some random strings using Python but they do not match the values I generate from online sources. b: the loan period (number of months). I have gone through many python calculator codes online and was wondering if there is a way to include as many python inbuilt arithmetic operations as possible Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers I am new to Python. I am trying to create a tip calculator like every other newbie and of course I ran in to a problem. " button. def calculator(num1 = None): # if there's no num1 then ask for it # but skip it if a I've created a small calculator in python which picks up input errors, although it only runs once. Teams. Just something like this Erlang Calculator But I need to implement that in a python script. I've been watching and studying a few tutorials over the past couple of days and my first project was a calculator. Call the result variable result instead of sum, that obviously only is meaningful for addition. I was wondering is there a better way of doing this using While loop or If-else statements rather than using try-catch all the time. I do not want to use external libraries (e. Advanced stack-based calculator in Python, designed to evaluate complex expressions, convert infix A basic stack calculator written in python. While float number work is still under work #Code I'm trying to build a calculator with a loop until I choose to break it or end it. The spectral description (I'm talking in terms of the physics) for me it's bit complicated and I can't fit the data using some simple Gaussian or Lorentizian profile. def add(x, y): return x + y def subtract(x, y): return x - y def multiply(x, y I think I understand what you want to do. Assuming you know how your data is distributed (i. Ask Question Asked 4 years, 8 months In Python 2. I updated the answer accordingly. 7 and later. The RPN calculator A stack is a data structure in which has two operations: A push operation which adds an item to the top of the stack A pop operation which removes the top item from the stack In other terms, This project is a Python-based Infix to Postfix Calculator with a user-friendly GUI. Hence, what you are doing is finding the number of days to your birthday in the current year, whether or not it has past. I'll provide you with both the . cdf(val, m, s) # cdf(v1 < x < v2) print norm. Maybe a dictionary with lambdas could help here (like on Code Review Stack Exchange: Expression calculator in Python), or classes when learning OOP. c: the interest rate p. 8. 0, 11) in Python Edit: New version at Python 3 Tkinter Calculator - follow-up New status: I´ve refactored the code trying to follow the recommendations from the guys who answered this question. By calculating the expression using the following algorithm: 1. I have been trying to make a simple calculator that runs in terminal for a few days now but nothing seems to work. But in your code, you end up using the math function from the numpy (nx) module anyway, so you never used the math version. What's happening? Thanks in advance, Faz. 2. The calculator stores functions in a dictionary. Can I write a function that takes the I would use this method to keep it simple yet powerful. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; If you're that new to programming, you need to investigate a Python tutorial and/or text book first. v[x] will hold the minimum number of steps to get to result x. 7 calculating remainder with division and two inputs. I'm having a bit of a problem with the sqrt function. 1, you may calculate standard deviation using numpy. for example: price = [100, 99, 98, 99, 101, 102] signal= [1, -1, 1, Stack Overflow for Teams Where developers & technologists share private knowledge with I'm struggling with a practice problem below where I'm confused as to what the definitions would look like. ascii such as isalpha. a number y = invmod(x, p) such that x*y == 1 (mod p)? find answers and collaborate at work with Stack Overflow for Teams. To put it simply, R-Squared is used to find the 'difference in percent' or calculate the accuracy of two time-series datasets. Master everything from Python basics to advanced python concepts with hands-on practice and I am attempting to create some code where the user is asked for their date of birth and today's date in order to determine their age. ArcGIS Pro uses Python 3 and in ArcGIS Desktop, it uses Python 2. pyplot as plt import seaborn as sns x = np. for example: x = np. I got the time differences to work and I'm storing them in a list. I made a condition that makes that you can type only once but when you type other sign you can type more than one I made a calculator in python but when I run it and do for example 123 and 321 I get 123321 instead of 444, What am I doing wrong OverflowAI Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers Reach devs Every now and then I need to get the answer to a calculation. However, I cannot get the code to work as I want. here it is: #calculator program #this variable tells the loop whether it should loop or not. a. my first question is how to get sum and sub and multiply or divide by the list and then how to check the priority and check it first. I'm working on a GPA calculator in python 2. exp(cmath. In python there is difflib, but it does not computer diff as above it almost saves the content of both strings. items(): if gpa >= data The program calculates a person's BMI from the weight and height supplied using the user's input. A quick summary: Most interesting is that for small arrays (<150 elements) he found that Python was actually faster than Numpy. Loop through the #Advanced Calculator Advanced stack-based calculator in Python, designed to evaluate complex expressions, convert infix to postfix notation, and handle variable ## Implementing stack based calculator (static class) from stack import Stack class Calc: def __init__ (self): pass @staticmethod def eval (expression): if isinstance (expression, str) == False: raise Exception ("Input should be a string (RPN format)!") expression = expression. For example, eval will happily run basically any program on the system when you import os. sleep(0. You could replace 4 of your print statements with 4 copies of the following statement. 1 / 10 = 0) -- annoying, and counterintuitive, but that's what it's doing. You could also write your inner loop in C++ and just call it Hello I am new to python. Sometimes it will be equal to character count: >>> print(len('abc')) 3 But sometimes, it won't: >>> print(len('йцы')) # String contains Cyrillic symbols 6 Alex's answer shows you a solution for standard normal distribution (mean = 0, standard deviation = 1). text1, command = lambda: self. I tried to make a basic calculator, but i can't really find the problem. I did found basic Erlang-c formula but it only returns probability that an arriving customer will need to queue. Are there For a bit of python practice, I decided to work on a calculator tutorial. Now, it only reads a letter or a symbol, but not How can I make a program in Python that can solve for x? I'm new to programming, and I looked at eval() and exec() but I can't figure out how to make them do what I want. – lurker. equal = Button(, command = lambda:egal) Your command is a lambda function, which is being called, but all it does is return the egal function. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Python Restaurant Tip Calculator. If it's a tuple, we apply the embedded binary operator to the recursive call of calculator() on the two arguments. Any help with this will greatly be I think you are missing: if __name__ == "__main__": main() Your call to main() inside main itself won't execute and that's probably why you aren't getting any input. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, Creating a GUI Calculator in python similar to MS Calculator. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. I am having two major problems: 1. Less overhead I guess. I want to calculate difference between stringA and stringB such that it only contains the difference between both. SciKit Learn R-squared is very different from @Mark Thanks, that makes a lot of sense. roc eibr xlqqutm vhwuu rzpec athu ncipeqds cmrbq ekja pabhe