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Python: split a list based on a condition?
...ramming (Haskell), or functional style (LINQ) is raised, we start to smell Python for its age - [x for x in blah if ...] - verbose, lambda is clumsy and limited... It feels like driving the coolest car from 1995 today. Not the same as back then.
– Tomasz Gandor
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Why do you have to call .items() when iterating over a dictionary in Python?
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For every python container C, the expectation is that
for item in C:
assert item in C
will pass just fine -- wouldn't you find it astonishing if one sense of in (the loop clause) had a completely different meaning from the other...
Activate a virtualenv via fabric as deploy user
... answer, virtualenv contextmanager declaration could be done in 5 lines on Python 2.6+, however it is never guaranteed that 'workon' alias is always imported correctly, and it's much more reliable to use `source .../activate' command
– Alex Volkov
Feb 18 '15 at...
Cost of exception handlers in Python
...n , the accepted answer suggested replacing a (very cheap) if statement in Python code with a try/except block to improve performance.
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Tool for adding license headers to source files? [closed]
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Python solution, modify for your own need
Features:
handles UTF headers (important for most IDEs)
recursively updates all files in target directory passing given mask (modify the .endswith parameter for the filemask of you...
Python syntax for “if a or b or c but not all of them”
I have a python script that can receive either zero or three command line arguments. (Either it runs on default behavior or needs all three values specified.)
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How do I parse JSON with Objective-C?
...nBundle] pathForResource:@"index" ofType:@"json"];
//将文件内容读取到字符串中，注意编码NSUTF8StringEncoding 防止乱码，
NSString* jsonString = [[NSString alloc] initWithContentsOfFile:path encoding:NSUTF8StringEncoding error:nil];
//将字符串写到缓冲区。
NSData* jsonD...
What is the 'cls' variable used for in Python classes?
Why is cls sometimes used instead of self as an argument in Python classes?
5 Answers
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Can iterators be reset in Python?
Can I reset an iterator / generator in Python? I am using DictReader and would like to reset it to the beginning of the file.
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How to calculate a mod b in Python?
Is there a modulo function in the Python math library?
7 Answers
7
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