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Delete column from pandas DataFrame
...columns:
df = df.drop(df.columns[[0, 1, 3]], axis=1) # df.columns is zero-based pd.Index
Also working with "text" syntax for the columns:
df.drop(['column_nameA', 'column_nameB'], axis=1, inplace=True)
Note: Introduced in v0.21.0 (October 27, 2017), the drop() method accepts index/columns keywor...
How do I mock an open used in a with statement (using the Mock framework in Python)?
...n 3, 'file' is not defined (used in the MagicMock spec), so I'm using io.IOBase instead.
– Jonathan Hartley
Apr 16 '12 at 11:11
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Define css class in django Forms
...fault form field being used, and you can dynamically set different classes based on runtime conditions. Cleaner than meta coding hacks...
– Daniel Naab
Dec 30 '08 at 22:37
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How to replace captured groups only?
... The parenthesis are used to create "groups", which then get assigned a base-1 index, accessible in a replace with a $, so the first word (\w+) is in a group, and becomes $1, the middle part (\d+) is the second group, (but gets ignored in the replace), and the third group is $3. So when you give ...
Python “raise from” usage
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@darkfeline: Lets say your database API supports opening databases from various sources, including the web and disk. Your API will always raise a DatabaseError if opening the database fails. But if the failure is the result of a IOError because a file fail...
How to get a reference to a module inside the module itself?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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Django, creating a custom 500/404 error page
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I updated the answer based on your comment. Sorry that the update is so late. I hope that this helps.
– Aaron Lelevier
Dec 26 '17 at 22:25
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How do I print to the debug output window in a Win32 app?
...generate the debug report and
determine the destination or destinations, based on the current report
modes and file defined for reportType. When the report is sent to a
debug message window, the filename, lineNumber, and moduleName are
included in the information displayed in the window.
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Why is Python 3.x's super() magic?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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Linux, Why can't I write even though I have group permissions?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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