
What does the "at" (@) symbol do in Python? - Stack Overflow
An @ symbol at the beginning of a line is used for class and function decorators: PEP 318: Decorators Python Decorators - Python Wiki The most common Python decorators are: @property …
What does colon equal (:=) in Python mean? - Stack Overflow
In Python this is simply =. To translate this pseudocode into Python you would need to know the data structures being referenced, and a bit more of the algorithm implementation. Some notes about …
Is there a "not equal" operator in Python? - Stack Overflow
Jun 16, 2012 · There's the != (not equal) operator that returns True when two values differ, though be careful with the types because "1" != 1. This will always return True and "1" == 1 will always return …
slice - How slicing in Python works - Stack Overflow
Python slicing is a computationally fast way to methodically access parts of your data. In my opinion, to be even an intermediate Python programmer, it's one aspect of the language that it is necessary to …
What does -> mean in Python function definitions? - Stack Overflow
Jan 17, 2013 · In Python 3.5 though, PEP 484 -- Type Hints attaches a single meaning to this: -> is used to indicate the type that the function returns. It also seems like this will be enforced in future versions …
python - What does ** (double star/asterisk) and * (star/asterisk) do ...
Aug 31, 2008 · See What do ** (double star/asterisk) and * (star/asterisk) mean in a function call? for the complementary question about arguments.
python - `from ... import` vs `import .` - Stack Overflow
Feb 25, 2012 · I'm wondering if there's any difference between the code fragment from urllib import request and the fragment import urllib.request or if they are interchangeable. If they are …
How do I declare custom exceptions in modern Python?
By "modern Python" I mean something that will run in Python 2.5 but be 'correct' for the Python 2.6 and Python 3.* way of doing things. And by "custom" I mean an Exception object that can include extra …
python - SSL: CERTIFICATE_VERIFY_FAILED with Python3 - Stack Overflow
Sep 2, 2017 · Go to the folder where Python is installed, e.g., in my case (Mac OS) it is installed in the Applications folder with the folder name 'Python 3.6'. Now double click on 'Install Certificates.command'.
python - How to concatenate (join) items in a list to a single string ...
Sep 17, 2012 · For handling a few strings in separate variables, see How do I append one string to another in Python?. For the opposite process - creating a list from a string - see How do I split a …