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How to leave/exit/deactivate a Python virtualenv
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To activate a Python virtual environment:
$cd ~/python-venv/
$./bin/activate
To deactivate:
$deactivate
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Remove all whitespace in a string
...he str.join() documentation, when you call sentence.join(str_list) you ask python to join items from str_list with sentenceas separator.
– Cédric Julien
Nov 24 '16 at 16:24
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NumPy: function for simultaneous max() and min()
... can optimize this.
Here's some fortran code which can be compiled into a python module via f2py (maybe a Cython guru can come along and compare this with an optimized C version ...):
subroutine minmax1(a,n,amin,amax)
implicit none
!f2py intent(hidden) :: n
!f2py intent(out) :: amin,amax
!...
When is a language considered a scripting language? [closed]
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So what about languages like Python? It's not easy to tell where the focus is, but one could say it's focusing more on own applications, still it's often called a "scripting language". Maybe because the hidden compilation into bytecode of the reference C...
Proper indentation for Python multiline strings
What is the proper indentation for Python multiline strings within a function?
14 Answers
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How can I return two values from a function in Python?
...the function twice.
Values aren't returned "in variables"; that's not how Python works. A function returns values (objects). A variable is just a name for a value in a given context. When you call a function and assign the return value somewhere, what you're doing is giving the received value a nam...
Python - use list as function parameters
How can I use a Python list (e.g. params = ['a',3.4,None] ) as parameters to a function, e.g.:
4 Answers
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Python argparse command line flags without arguments
...p a switch by setting a variable True or False, have a look at http://docs.python.org/dev/library/argparse.html#action (specifically store_true and store_false)
import argparse
parser = argparse.ArgumentParser()
parser.add_argument('-w', action='store_true')
where action='store_true' implies def...
How to sort a list of objects based on an attribute of the objects?
I've got a list of Python objects that I'd like to sort by an attribute of the objects themselves. The list looks like:
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Queue.Queue vs. collections.deque
...gle thread? If your code is that sensitive to the speed of Queue vs deque, Python might not be the language you're looking for.
– Keith Gaughan
Dec 9 '15 at 17:24
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