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Why is printing to stdout so slow? Can it be sped up?
...ng. :-)
The disk appears to be faster, because it is highly buffered: all Python's write() calls are returning before anything is actually written to physical disk. (The OS does this later, combining many thousands of individual writes into a big, efficient chunks.)
The terminal, on the other hand...
How do I get PyLint to recognize numpy members?
I am running PyLint on a Python project. PyLint makes many complaints about being unable to find numpy members. How can I avoid this while avoiding skipping membership checks.
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How to merge dictionaries of dictionaries?
...tate the first argument; that makes the "reduce" easier to explain]
ps in python 3, you will also need from functools import reduce
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Rotating a two-dimensional array in Python
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That's a clever bit.
First, as noted in a comment, in Python 3 zip() returns an iterator, so you need to enclose the whole thing in list() to get an actual list back out, so as of 2020 it's actually:
list(zip(*original[::-1]))
Here's the breakdown:
[::-1] - makes a shallow co...
Understanding repr( ) function in Python
...can "eval()"
it, meaning it is a string representation that evaluates to a Python
object)
5 Answers
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Explicitly select items from a list or tuple
I have the following Python list (can also be a tuple):
8 Answers
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Python string.replace regular expression [duplicate]
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Not the answer you're looking for? Browse other questions tagged python regex replace or ask your own question.
Python + Django page redirect
...thod as of Django 1.0. See this answer: stackoverflow.com/questions/523356/python-django-page-redirect/…
– Jake
Dec 16 '10 at 0:40
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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...
Why is reading lines from stdin much slower in C++ than Python?
I wanted to compare reading lines of string input from stdin using Python and C++ and was shocked to see my C++ code run an order of magnitude slower than the equivalent Python code. Since my C++ is rusty and I'm not yet an expert Pythonista, please tell me if I'm doing something wrong or if I'm mis...