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What does [:] mean?
I'm analyzing some Python code and I don't know what
6 Answers
6
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What character to use to put an item at the end of an alphabetic list?
... annoying issues using 末 or other special characters.
For example, using Python 2.7, this is how you will see your folders with the non-printable characters Ω, 末, 口,.
os.listdir(os.getcwd())
Out[2]: ['\xe6\x9c\xab ', '\xe5\x8f\xa3 ', '\xce\xa9 ', '\xee\xa0\xba ']
For someone or somethin...
Mod of negative number is melting my brain
...ividends / divisors and complies with other implementations (namely, Java, Python, Ruby, Scala, Scheme, Javascript and Google's Calculator):
internal static class IntExtensions
{
internal static int Mod(this int a, int n)
{
if (n == 0)
throw new ArgumentOutOfRangeExcepti...
Sharing a result queue among several processes
...
@alexis Python 2.7 (2010) relevantly here is only missing the context manager and the error_callback-parameter for apply_async, so it didn't change much since.
– Darkonaut
Apr 8 '19 at 18:26
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Simple Log to File example for django 1.3+
...error("Hey there it works!!")
Log levels are explained here and for pure python here.
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Django - limiting query results
...the LIMIT 10 would be issued to the database so slicing would not occur in Python but in the database.
See limiting-querysets for more information.
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Find unique rows in numpy.array
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+1 This is clear, short and pythonic. Unless speed is a real issue, these type of solutions should take preference over the complex, higher voted answers to this question IMO.
– Bill Cheatham
Apr 30 '14 at 13:36
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What is a Lambda?
...eir own terminology. In LISP, a lambda is just an anonymous function. In Python, a lambda is an anonymous function specifically limited to a single expression; anything more, and you need a named function. Lambdas are closures in both languages.
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How to find out element position in slice?
...ll to increase programmer's productivity. And go programs looks as nice as python ones :) So why there is no a common way to do such a common task? I mean, if you want to check if container has an element you can just if element in collection: do_something()
– OCyril
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Is there a short contains function for lists?
...t you can define on any class you write and can get extremely handy to use python at his full extent.
A dumb use may be:
>>> class ContainsEverything:
def __init__(self):
return None
def __contains__(self, *elem, **k):
return True
>>> a = ContainsEver...