interpreter

Why python shell stores last expression in _ variable but python file does not?

Why python shell stores last expression in _ variable but python file does not? Question: I ran below code in python shell and from a python file, I expected the same output but ironically i get NameError: name ‘_’ is not defined error in python file. >>> 10+2 12 >>> print(_) 12 So i started …

Total answers: 1

Does strict typing increase Python program performance?

Does strict typing increase Python program performance? Question: Based on questions like this What makes C faster than Python? I’ve learned that dynamic/static typing isn’t the main reason that C is faster than Python. It appears to be largely because python programs are interpreted, and c programs are compiled. I’m wondering if strict typing would …

Total answers: 1

leading zero causes an exception in the program

leading zero causes an exception in the program Question: i hope you are doing well. I have a question maybe it is stupid to ask rather than search. but I looked up for a satisfactory answer. Why leading zero is not allowed in some language, such as python. what problems can leading zero produce? thanks …

Total answers: 1

ModuleNotFoundError: No Module Named openai

ModuleNotFoundError: No Module Named openai Question: import requests from bs4 import BeautifulSoup import openai #write each line of nuclear.txt to a list with open(‘nuclear.txt’, ‘r’) as f: lines = f.readlines() #remove the newline character from each line lines = [line.rstrip() for line in lines] #gather the text from each website and add it to a …

Total answers: 4

Why do 'return bool' show different results in command prompt vs IDE

Why do 'return bool' show different results in command prompt vs IDE Question: If I try the below code in command prompt , I get correct results, however, the same code using IDE(Atom) do not produce any results. def search_for_vowels(word): """Display any vowels found in an asked for word""" vowels = set(‘aeiou’) found = vowels.intersection(set(word)) …

Total answers: 1

Invalid Python interpreter selected for the project

Invalid Python interpreter selected for the project Question: I use Pycharm, and whenever I move a project to another folder, it says "invalid python interpreter selected for the project". I think it happens because the path to venv has changed. I tried Configure Python Interpreter > Add Interpreter > Select "Existing Environment" with the new …

Total answers: 4

Does python reuse repeated calculation results?

Does python reuse repeated calculation results? Question: If I have an expression that I wish to evaluate in Python, such as the expression for r in the code snippet below, will the Python interpreter be smart and reuse the subresult x+y+z, or just evaluate it twice? I’d also be interested to know if the answer …

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Why is string comparison so fast in python?

Why is string comparison so fast in python? Question: I became curious to understand the internals of how string comparison works in python when I was solving the following example algorithm problem: Given two strings, return the length of the longest common prefix Solution 1: charByChar My intuition told me that the optimal solution would …

Total answers: 2

Does Python optimize away a variable that's only used as a return value?

Does Python optimize away a variable that's only used as a return value? Question: Is there any ultimate difference between the following two code snippets? The first assigns a value to a variable in a function and then returns that variable. The second function just returns the value directly. Does Python turn them into equivalent bytecode? …

Total answers: 2

How can I make a python script change itself?

How can I make a python script change itself? Question: How can I make a python script change itself? To boil it down, I would like to have a python script (run.py)like this a = 0 b = 1 print a + b # do something here such that the first line of this script …

Total answers: 4