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How do lexical closures work?
...had with lexical closures in Javascript code, I came along this problem in Python:
9 Answers
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Is there a difference between “==” and “is”?
...gt;>> b == a
True
In your case, the second test only works because Python caches small integer objects, which is an implementation detail. For larger integers, this does not work:
>>> 1000 is 10**3
False
>>> 1000 == 10**3
True
The same holds true for string literals:
&g...
Get last n lines of a file, similar to tail
... If you use lower-level I/O, then you might see a speedup.
UPDATE
for Python 3.2 and up, follow the process on bytes as In text files (those opened without a "b" in the mode string), only seeks relative to the beginning of the file are allowed (the exception being seeking to the very file end w...
If list index exists, do X
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In Python negative indexes on lists just count backwards from the end of the list. So they could not exist in a way that impacts the length of the list.
– JonathanV
Aug 7 '19 at 18:00
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How to import other Python files?
How do I import other files in Python?
19 Answers
19
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Fastest way to convert an iterator to a list
... @systempuntoout It runs entirely in C. The list comprehension is in python. Of course it runs faster.
– aaronasterling
Sep 24 '10 at 22:24
4
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Why compile Python code?
Why would you compile a Python script? You can run them directly from the .py file and it works fine, so is there a performance advantage or something?
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Calling C/C++ from Python?
What would be the quickest way to construct a Python binding to a C or C++ library?
16 Answers
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How to generate random number with the specific length in python
...an just do it as a oneliner:
'{:03}'.format(random.randrange(1, 10**3))
python 3.6+ only oneliner:
f'{random.randrange(1, 10**3):03}'
Example outputs of the above are:
'026'
'255'
'512'
Implemented as a function:
import random
def n_len_rand(len_, floor=1):
top = 10**len_
if flo...
Compression/Decompression string with C#
...in .net. I am doing compression and decompression string in C#. There is a XML and I am converting in string and after that I am doing compression and decompression.There is no compilation error in my code except when I decompression my code and return my string, its returning only half of the XML.
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