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Rotating a two-dimensional array in Python
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That's a clever bit.
First, as noted in a comment, in Python 3 zip() returns an iterator, so you need to enclose the whole thing in list() to get an actual list back out, so as of 2020 it's actually:
list(zip(*original[::-1]))
Here's the breakdown:
[::-1] - makes a shallow co...
Understanding repr( ) function in Python
...can "eval()"
it, meaning it is a string representation that evaluates to a Python
object)
5 Answers
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Explicitly select items from a list or tuple
I have the following Python list (can also be a tuple):
8 Answers
8
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Get last n lines of a file, similar to tail
... If you use lower-level I/O, then you might see a speedup.
UPDATE
for Python 3.2 and up, follow the process on bytes as In text files (those opened without a "b" in the mode string), only seeks relative to the beginning of the file are allowed (the exception being seeking to the very file end w...
Python + Django page redirect
...thod as of Django 1.0. See this answer: stackoverflow.com/questions/523356/python-django-page-redirect/…
– Jake
Dec 16 '10 at 0:40
2
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Python string.replace regular expression [duplicate]
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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
2
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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
!...
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...