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Preserving signatures of decorated functions
...ule __main__:
#
# funny_function(x, y, z=3)
# Computes x*y + 2*z
Python 3.4+
functools.wraps() from stdlib preserves signatures since Python 3.4:
import functools
def args_as_ints(func):
@functools.wraps(func)
def wrapper(*args, **kwargs):
args = [int(x) for x in args]
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How to count the number of files in a directory using Python
I need to count the number of files in a directory using Python.
24 Answers
24
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Standard way to embed version into python package?
Is there a standard way to associate version string with a python package in such way that I could do the following?
17 Ans...
How do I get the number of elements in a list?
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The len() function can be used with several different types in Python - both built-in types and library types. For example:
>>> len([1,2,3])
3
Official 2.x documentation is here: len()
Official 3.x documentation is here: len()
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Get the first item from an iterable that matches a condition
...
In Python 2.6 or newer:
If you want StopIteration to be raised if no matching element is found:
next(x for x in the_iterable if x > 3)
If you want default_value (e.g. None) to be returned instead:
next((x for x in the_it...
How to print instances of a class using print()?
I am learning the ropes in Python. When I try to print an object of class Foobar using the print() function, I get an output like this:
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setuptools: package data folder location
I use setuptools to distribute my python package. Now I need to distribute additional datafiles.
3 Answers
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Flattening a shallow list in Python [duplicate]
... hadn't heard from from_iterable. it's prettier than the *, if less pythonic
– Jules G.M.
Mar 29 '16 at 22:04
1
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NameError: name 'reduce' is not defined in Python
I'm using Python 3.2. Tried this:
5 Answers
5
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How to randomly select an item from a list?
...orrect', 'horse', 'staple']
print(secrets.choice(foo))
secrets is new in Python 3.6, on older versions of Python you can use the random.SystemRandom class:
import random
secure_random = random.SystemRandom()
print(secure_random.choice(foo))
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