大约有 5,685 项符合查询结果（耗时：0.0262秒） [XML]
Converting unix timestamp string to readable date
I have a string representing a unix timestamp (i.e. "1284101485") in Python, and I'd like to convert it to a readable date. When I use time.strftime , I get a TypeError :
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How do I exchange keys with values in a dictionary?
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Python 2:
res = dict((v,k) for k,v in a.iteritems())
Python 3 (thanks to @erik):
res = dict((v,k) for k,v in a.items())
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How to access environment variable values?
I set an environment variable that I want to access in my Python application. How do I get its value?
12 Answers
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Python memory leaks [closed]
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Have a look at this article: Tracing python memory leaks
Also, note that the garbage collection module actually can have debug flags set. Look at the set_debug function. Additionally, look at this code by Gnibbler for determining the types of objects that have ...
Deleting folders in python recursively
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Python3 version docs: docs.python.org/3/library/shutil.html#shutil.rmtree
– Vladimir Oprya
Oct 17 '19 at 17:50
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Python hashable dicts
... an unneeded itermediate list -- fixable by s/items/iteritems/ -- assuming Python 2.* as you don't say;-).
– Alex Martelli
Jul 20 '09 at 4:48
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Join a list of strings in python and wrap each string in quotation marks
...2: following @JCode's comment, adding a map to ensure that join will work, Python 2.7.12
>>> timeit.Timer("""words = ['hello', 'world', 'you', 'look', 'nice'] * 100; ', '.join('"{0}"'.format(w) for w in words)""").timeit(1000)
0.08646488189697266
>>> timeit.Timer("""words = ['hel...
Create nice column output in python
I am trying to create a nice column list in python for use with commandline admin tools which I create.
18 Answers
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How to dynamically build a JSON object with Python?
I am new to Python and I am playing with JSON data. I would like to dynamically build a JSON object by adding some key-value to an existing JSON object.
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Python (and Python C API): __new__ versus __init__
The question I'm about to ask seems to be a duplicate of Python's use of __new__ and __init__? , but regardless, it's still unclear to me exactly what the practical difference between __new__ and __init__ is.
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