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How can I recover the return value of a function passed to multiprocessing.Process?
...: should use args=(my_function_argument, ). Note the , comma here! Or else Python will complain "missing positional arguments". Took me 10 minutes to figure out. Also check the manual usage (under the "process class" section).
– yuqli
Apr 29 '19 at 15:17
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Get difference between two lists
I have two lists in Python, like these:
27 Answers
27
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What are the relative strengths and weaknesses of Git, Mercurial, and Bazaar? [closed]
..., and is scriptable; Mercurial is written in C (core, for performance) and Python, and provides API for extensions; Bazaar is written in Python, and provides API for extensions.
In considering each of them with one another and against version control systems like SVN and Perforce, what issues sho...
How do you remove duplicates from a list whilst preserving order?
Is there a built-in that removes duplicates from list in Python, whilst preserving order? I know that I can use a set to remove duplicates, but that destroys the original order. I also know that I can roll my own like this:
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How to make an immutable object in Python?
...ve never needed this, it just struck me that making an immutable object in Python could be slightly tricky. You can't just override __setattr__ , because then you can't even set attributes in the __init__ . Subclassing a tuple is a trick that works:
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2016电商“死亡”名单（上半年） - 资讯 - 清泛网 - 专注IT技能提升
...电商圈出现频率颇高的词，也是目前不少创业者不得不面对的窘境：当烧钱战略遇到资本寒冬，没招儿……亿邦动力网梳理2016年上...
资本寒冬，今年电商圈出现频率颇高的词，也是目前不少创业者不得不面对的窘境：当烧钱战...
Using %f with strftime() in Python to get microseconds
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Both support %z in Python 3 :-) here's datetime and then time
– adamnfish
Feb 13 '17 at 17:55
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Is nested function a good approach when required by only one function? [closed]
...defined or used.
Update:
Here's proof that nesting them is slower (using Python 3.6.1), although admittedly not by much in this trivial case:
setup = """
class Test(object):
def separate(self, arg):
some_data = self._method_b(arg)
def _method_b(self, arg):
return arg+1
...
Check if a string contains a number
...
use str.isalpha()
Ref: https://docs.python.org/2/library/stdtypes.html#str.isalpha
Return true if all characters in the string are alphabetic and there
is at least one character, false otherwise.
...
Hibernate JPA Sequence (non-Id)
...es."
For properties generated on insert only, your property mapping (.hbm.xml) would look like:
<property name="foo" generated="insert"/>
For properties generated on insert and update your property mapping (.hbm.xml) would look like:
<property name="foo" generated="always"/>
Unfor...