python-3.5 Archives - Page 2 of 7

Where should virtualenvs be created?

November 19, 2020 Andrew Rocky

Question or problem about Python programming: I’m confused as to where I should put my virtualenvs.

multiprocessing vs multithreading vs asyncio in Python 3

November 19, 2020 Bell Jacquise

Question or problem about Python programming: I found that in Python 3.4 there are few different libraries for multiprocessing/threading: multiprocessing vs threading vs asyncio.

Python is a powerful general-purpose programming language.

Python void return type annotation

November 19, 2020 Aba Tayler

Question or problem about Python programming: In python 3.x, it is common to use return type annotation of a function, such as:

What does a b prefix before a python string mean?

November 19, 2020 James Cameron

Question or problem about Python programming: In a python source code I stumbled upon I’ve seen a small b before a string like in:

How to re-raise an exception in nested try/except blocks?

November 19, 2020 Jeffrey Schneider

Question or problem about Python programming: I know that if I want to re-raise an exception, I simple use raise without arguments in the respective except block. But given a nested expression like

What is the pythonic way to unpack tuples?

November 19, 2020 Abreonia Ng

Question or problem about Python programming: This is ugly. What’s a more Pythonic way to do it? import datetime t= (2010, 10, 2, 11, 4, 0, 2, 41, 0) dt = datetime.datetime(t[0], t[1], t[2], t[3], t[4], t[5], t[6]) How to solve the problem: Solution 1: Generally, you can use the func(*tuple) syntax. You can even […]

Functions Defined The core of extensible programming is defining functions. Python allows mandatory and optional arguments, keyword arguments, and even arbitrary argument lists.

What is the Bash equivalent of Python’s pass statement

November 19, 2020 Ogima Cooper

Question or problem about Python programming: Is there a Bash equivalent to the Python’s pass statement?

Representing graphs (data structure) in Python

November 19, 2020 Simon Abital

Question or problem about Python programming: How can one neatly represent a graph in Python? (Starting from scratch i.e. no libraries!)What data structure (e.g. dicts/tuples/dict(tuples)) will be fast but also memory efficient?One must be able to do various graph operations on it. As pointed out, the various graph representations might help. How does one go […]

Set Django IntegerField by choices=… name

November 19, 2020 Oceane Wilson

Question or problem about Python programming: When you have a model field with a choices option you tend to have some magic values associated with human readable names. Is there in Django a convenient way to set these fields by the human readable name instead of the value?

How to use newline ‘\n’ in f-string to format output in Python 3.6?

November 19, 2020 Odhran Miss

Question or problem about Python programming: I would like to know how to format this case in a Pythonic way with f-strings: