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Finding the source code for built-in Python functions?
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edited Nov 19 '17 at 4:11
Rob Rose
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Define a lambda expression that raises an Exception
How can I write a lambda expression that's equivalent to:
6 Answers
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What is the purpose of the single underscore “_” variable in Python?
...y the standard CPython
interpreter, and other interpreters have followed suit
As a general purpose "throwaway" variable name to indicate that part
of a function result is being deliberately ignored (Conceptually, it is being discarded.), as in code like:
label, has_label, _ = text.partition(':').
As...
What does __FILE__ mean in Ruby?
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It is a reference to the current file name. In the file foo.rb, __FILE__ would be interpreted as "foo.rb".
Edit: Ruby 1.9.2 and 1.9.3 appear to behave a little differently from what Luke Bayes said in his comment. With these...
How to import a Python class that is in a directory above?
I want to inherit from a class in a file that lies in a directory above the current one.
7 Answers
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How can I find script's directory with Python? [duplicate]
...to call os.path.realpath on __file__, so that when __file__ is a filename without the path you still get the dir path:
import os
print(os.path.dirname(os.path.realpath(__file__)))
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Should I use a class or dictionary?
...age? What happens if you later want to add some code? Where would your __init__ code go?
Classes are for bundling related data (and usually code).
Dictionaries are for storing key-value relationships, where usually the keys are all of the same type, and all the values are also of one type. Occasio...
Approximate cost to access various caches and main memory?
...for example, check page 22 for some timings & cycles for example).
Additionally, this page has some details on clock cycles etc. The second link served the following numbers:
Core i7 Xeon 5500 Series Data Source Latency (approximate) [Pg. 22]
local L1 CACHE hit, ...
Why use def main()? [duplicate]
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Without the main sentinel, the code would be executed even if the script were imported as a module.
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URL encoding the space character: + or %20?
When is a space in a URL encoded to + , and when is it encoded to %20 ?
4 Answers
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