Are dictionaries ordered in Python 3.6+?
Dictionaries are insertion ordered as of Python 3.6. It is described as a CPython implementation detail rather than a language feature. The documentation states:
python-internals
Why is the order in dictionaries and sets arbitrary?
I don’t understand how looping over a dictionary or set in python is done by ‘arbitrary’ order.
Accessing class variables from a list comprehension in the class definition
How do you access other class variables from a list comprehension within the class definition? The following works in Python 2 but fails in Python 3:
How does the @property decorator work in Python?
I would like to understand how the built-in function property works. What confuses me is that property can also be used as a decorator, but it only takes arguments when used as a built-in function and not when used as a decorator.
“is” operator behaves unexpectedly with integers
Why does the following behave unexpectedly in Python?
Finding the source code for built-in Python functions?
Is there a way to see how built in functions work in python? I don’t mean just how to use them, but also how were they built, what is the code behind sorted or enumerate etc…?
What is the global interpreter lock (GIL) in CPython?
What is a global interpreter lock and why is it an issue?
Why is “1000000000000000 in range(1000000000000001)” so fast in Python 3?
It is my understanding that the range() function, which is actually an object type in Python 3, generates its contents on the fly, similar to a generator.
Usage of __slots__?
What is the purpose of __slots__ in Python — especially with respect to when I would want to use it, and when not?
How is Python’s List Implemented?
Is it a linked list, an array? I searched around and only found people guessing. My C knowledge isn’t good enough to look at the source code.