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Algorithm to generate all possible permutations of a list?
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Here is an algorithm in Python that works by in place on an array:
def permute(xs, low=0):
if low + 1 >= len(xs):
yield xs
else:
for p in permute(xs, low + 1):
yield p
for i in range(low + 1, l...
Move an item inside a list?
In Python, how do I move an item to a definite index in a list?
5 Answers
5
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Find running median from a stream of integers
... problem but also helped me learn heaps here is my basic implementation in python : github.com/PythonAlgo/DataStruct
– swati saoji
Feb 24 '16 at 20:48
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Filtering a list based on a list of booleans
...tered_list = [i for (i, v) in zip(list_a, filter) if v]
Using zip is the pythonic way to iterate over multiple sequences in parallel, without needing any indexing. This assumes both sequences have the same length (zip stops after the shortest runs out). Using itertools for such a simple case is a ...
Hide all warnings in ipython
I need to produce a screencast of an ipython session, and to avoid confusing viewers, I want to disable all warnings emitted by warnings.warn calls from different packages. Is there a way to configure the ipythonrc file to automatically disable all such warnings?
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`elif` in list comprehension conditionals
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Python's conditional expressions were designed exactly for this sort of use-case:
>>> l = [1, 2, 3, 4, 5]
>>> ['yes' if v == 1 else 'no' if v == 2 else 'idle' for v in l]
['yes', 'no', 'idle', 'idle', 'idle'...
Why does Pycharm's inspector complain about “d = {}”?
...ttings or Default Settings.
Navigate to Settings -> Inspections -> Python
Uncheck "Dictionary creation could be rewritten by dictionary literal"
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How can I test a Windows DLL file to determine if it is 32 bit or 64 bit? [duplicate]
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Very handy. I created a Python translation of your code: github.com/tgandor/meats/blob/master/missing/arch_of.py
– Tomasz Gandor
Sep 29 '16 at 9:48
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Algorithm to detect corners of paper sheet in photo
...eady, and then sort my code on my day off tomorrow.
First tip, OpenCV and python are awesome, move to them as soon as possible. :D
Instead of removing small objects and or noise, lower the canny restraints, so it accepts more edges, and then find the largest closed contour (in OpenCV use findconto...
Illegal mix of collations (utf8_unicode_ci,IMPLICIT) and (utf8_general_ci,IMPLICIT) for operation '=
...stead of (utf8_unicode_ci, IMPLICIT). i am scraping data off the web using python, then creating an CSV file with the scraped data, which i then process with a PHP file on my server that uploads the data to my database. all my MySQL tables/columns are collated as utf8mb4_unicode_ci. might the issue ...