96 What does the “at” (@) symbol do in Python? @ symbol is a syntactic sugar python provides to utilize decorator, to paraphrase the question, It's exactly about what does decorator do in Python? Put it …

What does the := operand mean, more specifically for Python? Can someone explain how to read this snippet of code? node := root, cost = 0 frontier := priority queue containing node only explored :=

Aug 31, 2008 · See What do ** (double star/asterisk) and * (star/asterisk) mean in a function call? for the complementary question about arguments.

Nov 29, 2011 · What's the usage of the tilde operator in Python? One thing I can think about is do something in both sides of a string or list, such as check if a string is palindromic or not: def …

Python 2.4 adds the command line switch -m to allow modules to be located using the Python module namespace for execution as scripts. The motivating examples were standard library modules such …

Mar 28, 2015 · The following will print the 'help' message: ./myprogram -h or: ./myprogram --help But, if I run the script without any arguments whatsoever, it doesn't do anything. What I want it to do is to …

How can I get the current system status (current CPU, RAM, free disk space, etc.) in Python? Ideally, it would work for both Unix-like and Windows platforms. There seems to be a few possible ways of

Linked to, but not explicitly mentioned here, is exactly when __all__ is used. It is a list of strings defining what symbols in a module will be exported when from <module> import * is used on the module. For …

I have a very large python script, 200K, that I would like to use as little memory as possible. It looks something like: # a lot of data structures r = [34, 78, 43, 12, 99] # a lot of functions ...

Jun 2, 2009 · Is there a way for a Python program to determine how much memory it's currently using? I've seen discussions about memory usage for a single object, but what I need is total memory usage …