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Can scrapy be used to scrape dynamic content from websites that are using AJAX?
I have recently been learning Python and am dipping my hand into building a web-scraper. It's nothing fancy at all; its only purpose is to get the data off of a betting website and have this data put into Excel.
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Representing and solving a maze given an image
...ple and standard, there should not be difficulties on implementing this in Python or whatever.
And here is the answer:
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Plot logarithmic axes with matplotlib in python
...ou are simply using the unsophisticated API, like I often am (I use it in ipython a lot), then this is simply
yscale('log')
plot(...)
Hope this helps someone looking for a simple answer! :).
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Why not use exceptions as regular flow of control?
...f the most expensive operations in .NET.
However, some languages (notably Python) use exceptions as flow-control constructs. For example, iterators raise a StopIteration exception if there are no further items. Even standard language constructs (such as for) rely on this.
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How to display a specific user's commits in svn log?
...me too. Like vi, on Unix/Linux distros sed is perhaps more ubiquitous than Python - and therefore no need to worry about installation.
– therobyouknow
Jul 20 '12 at 15:32
10
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ValueError: invalid literal for int() with base 10: ''
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The following are totally acceptable in python:
passing a string representation of an integer into int
passing a string representation of a float into float
passing a string representation of an integer into float
passing a float into int
passing an integer into ...
difference between variables inside and outside of __init__()
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That's not what python does for me. Lists/dicts/etc get shared between all instances if you don't create them in __init__().
– too much php
Oct 8 '09 at 11:43
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Converting Mercurial folder to a Git repository
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On Linux or anything with bash/sh or similar, or python, try with fast export:
cd
git clone git://repo.or.cz/fast-export.git
git init git_repo
cd git_repo
~/fast-export/hg-fast-export.sh -r /path/to/old/mercurial_repo
git checkout HEAD
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How to get the type of a variable in MATLAB?
...d Sep 20 '17 at 17:13
Herman Wilén
1651010 bronze badges
answered Mar 11 '09 at 21:11
gnovicegnovice
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Difference between subprocess.Popen and os.system
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If you check out the subprocess section of the Python docs, you'll notice there is an example of how to replace os.system() with subprocess.Popen():
sts = os.system("mycmd" + " myarg")
...does the same thing as...
sts = Popen("mycmd" + " myarg", shell=True).wait()
T...