Click a Button in Scrapy
I’m using Scrapy to crawl a webpage. Some of the information I need only pops up when you click on a certain button (of course also appears in the HTML code after clicking).
Python
argparse subparser monolithic help output
My argparse has only 3 flags (store_true) on the top level, everything else is handled through subparsers. When I run myprog.py --help, the output shows a list of all subcommands like normal, {sub1, sub2, sub3, sub4, ...}. So, the default is working great…
How to convert a grayscale image into a list of pixel values?
I am trying to create a python program which takes a grayscale, 24*24 pixel image file (I haven’t decided on the type, so suggestions are welcome) and converts it to a list of pixel values from 0 (white) to 255 (black).
Where is pip cache folder?
Where is Python pip cache folder? I had an error during install and now reinstall packages using cache files. Where is that directory? I want to backup them for install in the future. Is it possible?
Local import statements in Python
I think putting the import statement as close to the fragment that uses it helps readability by making its dependencies more clear. Will Python cache this? Should I care? Is this a bad idea?
Django annotate count with a distinct field
I have two models defined loosely like this:
Sorting a tuple that contains tuples
I have the following tuple, which contains tuples:
Best method for reading newline delimited files and discarding the newlines?
I am trying to determine the best way to handle getting rid of newlines when reading in newline delimited files in Python.
Communicate multiple times with a process without breaking the pipe?
It’s not the first time I’m having this problem, and it’s really bugging me.
Whenever I open a pipe using the Python subprocess module, I can only communicate with it once, as the documentation specifies: Read data from stdout and stderr, until end-of-file is reached
Python – IOError: [Errno 13] Permission denied:
I’m getting IOError: [Errno 13] Permission denied and I don’t know what is wrong wit this code.