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Freely convert between List and IEnumerable
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What's the difference between lists enclosed by square brackets and parentheses in Python?
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How to check if a value exists in a dictionary (python)
...4': 'four'}
>>> 'one' in d.values()
True
Out of curiosity, some comparative timing:
>>> T(lambda : 'one' in d.itervalues()).repeat()
[0.28107285499572754, 0.29107213020324707, 0.27941107749938965]
>>> T(lambda : 'one' in d.values()).repeat()
[0.38303399085998535, 0.3725...
How to determine if a number is a prime with regex?
...er than or equal to 2 that match the n-length string... meaning you have a composite n. So again, return the negation of the successful match: n is NOT prime.
If no match can be found, then you can't come up with a your product of two natural numbers greater than or equal to 2... and you have both ...
What does it mean when git says a file “needs update”?
...a file that's dirty (currently modified in your working tree). You need to commit your outstanding changes, or stash them, pull/rebase/merge/whatever you're doing to update, and unstash
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Why use 'git rm' to remove a file instead of 'rm'?
...h will remove the file from the index (staging it for deletion on the next commit), but keep your copy in the local file system.
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In HTML5, should the main navigation be inside or outside the element?
... element. For websites having both secondary and main navigation, it seems common to include the secondary navigation as a <nav> element inside the masthead <header> element with the main navigation as a <nav> element outside the masthead <header> element. However, i...
What does the thread_local mean in C++11?
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Store query result in a variable using in PL/pgSQL
...le. Don't leave out the table name prefix on test_table.name or you'll get complaints about an ambiguous reference.
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Filtering a list based on a list of booleans
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You're looking for itertools.compress:
>>> from itertools import compress
>>> list_a = [1, 2, 4, 6]
>>> fil = [True, False, True, False]
>>> list(compress(list_a, fil))
[1, 4]
Timing comparisons(py3.x):
>>>...