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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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How do I configure Maven for offline development?
...endency:go-offline" to ensure all the dependencies referred to in your pom.xml are present in your local repository.
– Thorbjørn Ravn Andersen
May 3 '14 at 16:01
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How can I safely create a nested directory?
...e is going to be written to exists, and if not, create the directory using Python? Here is what I tried:
26 Answers
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Anaconda vs. EPD Enthought vs. manual installation of Python [closed]
What are the relative merits / downsides of various Python bundles (EPD / Anaconda) vs. a manual install?
4 Answers
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how to concatenate two dictionaries to create a new one in Python? [duplicate]
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Slowest and doesn't work in Python3: concatenate the items and call dict on the resulting list:
$ python -mtimeit -s'd1={1:2,3:4}; d2={5:6,7:9}; d3={10:8,13:22}' \
'd4 = dict(d1.items() + d2.items() + d3.items())'
100000 loops, best of 3: 4.93 usec pe...
R cannot be resolved - Android error
...t been generated, or even disappeared, this was due to some problem in the XML layout file that prevented the application from being built.
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Add margin between a RadioButton and its label in Android?
...s with a "values-v17" directory; put your API 17+ dimension in a resources xml there and the standard one for 16 and below in just plain "values".
– akent
Nov 11 '14 at 4:47
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Read only the first line of a file?
How would you get only the first line of a file as a string with Python?
8 Answers
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Convert int to ASCII and back in Python
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ASCII to int:
ord('a')
gives 97
And back to a string:
in Python2: str(unichr(97))
in Python3: chr(97)
gives 'a'
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Python str vs unicode types
Working with Python 2.7, I'm wondering what real advantage there is in using the type unicode instead of str , as both of them seem to be able to hold Unicode strings. Is there any special reason apart from being able to set Unicode codes in unicode strings using the escape char \ ?:
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