Stack Overflow Developer Survey 2019
Python, the fastest-growing major programming language, has risen in the ranks
of programming languages in our survey yet again, edging out Java this year and
standing as the second most loved language (behind Rust). Over half of ...
Calling an external command from Python - Stack Overflow
Look at the subprocess module in the standard library: import subprocess
subprocess.run(["ls", "-l"]). The advantage of subprocess vs. system is that it is
more flexible (you can get the stdout , stderr , the "real" status code, better error
Understanding Python super() with __init__() methods - Stack ...
super() lets you avoid referring to the base class explicitly, which can be nice. But
the main advantage comes with multiple inheritance, where all sorts of fun stuff
can happen. See the standard docs on super if you haven't already. Note that the
What are metaclasses in Python? - Stack Overflow
A metaclass is the class of a class. A class defines how an instance of the class (
i.e. an object) behaves while a metaclass defines how a class behaves. A class is
an instance of a metaclass. While in Python you can use arbitrary callables for ...
How to print colored text in Python? - Stack Overflow
This somewhat depends on what platform you are on. The most common way to
do this is by printing ANSI escape sequences. For a simple example, here's some
python code from the blender build scripts: class bcolors: HEADER = '\033[95m' ...
Making a flat list out of list of lists in Python
Given a list of lists l ,. flat_list = [item for sublist in l for item in sublist]. which
means: flat_list =  for sublist in l: for item in sublist: flat_list.append(item). is faster
than the shortcuts posted so far. ( l is the list to flatten.) Here is the corresponding
Does Python have a ternary conditional operator? - Stack Overflow
Yes, it was added in version 2.5. The expression syntax is: a if condition else b.
First condition is evaluated, then exactly one of either a or b is evaluated and
returned based on the Boolean value of condition . If condition evaluates to True