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Make virtualenv inherit specific packages from your global site-packages
...tualenv which will contain just some libraries (which i chose) of the base python installation.
4 Answers
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How to spread django unit tests over multiple files?
... module. This follows the suggested organization for unit
tests. See the Python documentation for more details on how to
construct a complex test suite.
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Using try vs if in python
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You often hear that Python encourages EAFP style ("it's easier to ask for forgiveness than permission") over LBYL style ("look before you leap"). To me, it's a matter of efficiency and readability.
In your example (say that instead of returning...
Convert Rows to columns using 'Pivot' in SQL Server
... group by Week
order by Week
FOR XML PATH(''), TYPE
).value('.', 'NVARCHAR(MAX)')
,1,1,'')
set @query = 'SELECT store,' + @cols + ' from
(
select store, week, xCount
from yt
) x
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django syncdb and an updated model
...e recently updated my model, added a BooleanField to it however when I do python manage.py syncdb , it doesn't add the new field to the database for the model. How can I fix this ?
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What does “while True” mean in Python?
...lly have some mechanism for breaking out of the loop early. In the case of Python it's the break statement in the cmd == 'e' case of the sample in your question.
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Convert a python dict to a string and back
... @AJ00200: and the ast.literal_eval alternative I mentioned?. From the Python help: "Safely evaluate an expression node or a string containing a Python expression. The string or node provided may only consist of the following Python literal structures: strings, numbers, tuples, lists, dicts, boo...
Equivalent of strace -feopen < command > on mac os X
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I suppose you meant strace -fetrace=open?
dtruss -f -t open python myfile.py
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Determine the type of an object?
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It might be more Pythonic to use a try...except block. That way, if you have a class which quacks like a list, or quacks like a dict, it will behave properly regardless of what its type really is.
To clarify, the preferred method of "telling...
How to overcome TypeError: unhashable type: 'list'
...111', '112'], 'AAC': ['123'], 'AAB': ['111']}
Note that if you are using Python 3.x, you'll have to make a minor adjustment to get it work properly. If you open the file with rb, you'll need to use line = line.split(b'x') (which makes sure you are splitting the byte with the proper type of string)...