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Get protocol + host name from URL

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Rolling median algorithm in C

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Installing specific package versions with pip

I'm trying to install version 1.2.2 of the MySQL_python adaptor, using a fresh virtualenv created with the --no-site-packages option. The current version shown in PyPi is 1.2.3 . Is there a way to install the older version? I found an article stating that this should do it: ...
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seek() function?

...of reference: 0: means your reference point is the beginning of the file 1: means your reference point is the current file position 2: means your reference point is the end of the file if omitted, from_what defaults to 0. Never forget that when managing files, there'll always be a position insi...
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How to add title to subplots in Matplotlib?

...x.title.set_text('My Plot Title') seems to work too. fig = plt.figure() ax1 = fig.add_subplot(221) ax2 = fig.add_subplot(222) ax3 = fig.add_subplot(223) ax4 = fig.add_subplot(224) ax1.title.set_text('First Plot') ax2.title.set_text('Second Plot') ax3.title.set_text('Third Plot') ax4.title.set_text(...
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Select random row from a sqlite table

... 216 Have a look at Selecting a Random Row from an SQLite Table SELECT * FROM table ORDER BY RANDOM...
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Understanding how recursive functions work

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How do you sort an array on multiple columns?

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Find the extension of a filename in Ruby

... 167 That's really basic stuff: irb(main):002:0> accepted_formats = [".txt", ".pdf"] => [".t...
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What are the special dollar sign shell variables?

... 1398 $1, $2, $3, ... are the positional parameters. "$@" is an array-like construct of all positi...