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pandas: How do I split text in a column into multiple rows?
...nswered Jun 14 '13 at 20:44
Dan AllanDan Allan
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“Least Astonishment” and the Mutable Default Argument
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Actually, this is not a design flaw, and it is not because of internals, or performance.
It comes simply from the fact that functions in Python are first-class objects, and not only a piece of code.
As soon as you get to think i...
getting date format m-d-Y H:i:s.u from milliseconds
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I generally opt for the second form as it's easier to read and understand. Additionally, DateTime is far more flexible and robust than the date/time functions. Handling microseconds is a case-in-point.
– Herber...
ALTER TABLE without locking the table?
...n doing an ALTER TABLE statement in MySQL, the whole table is read-locked (allowing concurrent reads, but prohibiting concurrent writes) for the duration of the statement. If it's a big table, INSERT or UPDATE statements could be blocked for a looooong time. Is there a way to do a "hot alter", like ...
Difference between initLoader and restartLoader in LoaderManager
...f the abstract LoaderManager, is much more enlightening.
initLoader
Call to initialize a particular ID with a Loader. If this ID already
has a Loader associated with it, it is left unchanged and any previous
callbacks replaced with the newly provided ones. If there is not
currently a L...
LaTeX table positioning
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This is a really really useful package. Thanks for sharing!
– John David
Jun 9 at 3:30
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Align DIV's to bottom or baseline
... I doubt this does what he wants, currently this will position all (looks as though there will be multiple child elements if its a dynamic bar chart) on top of each other.
– crmepham
Dec 14 '13 at 6:55
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Windows: How to specify multiline command on command prompt?
...sort of dangerous answer for you.
Trying to use this with things that actually use piping, like say findstr is quite problematic. The same goes for dealing with elses. But if you just want a multi-line conditional command to execute directly from CMD and not via a batch file, this should do work we...
How to construct a timedelta object from a simple string
...on, without having to resort to external libraries such as dateutil or manually parsing the input, is to use datetime's powerful strptime string parsing method.
from datetime import datetime, timedelta
# we specify the input and the format...
t = datetime.strptime("05:20:25","%H:%M:%S")
# ...and us...
Removing a model in rails (reverse of “rails g model Title…”)
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It removes all, but it do not create downgrade migration or something.
– mr.The
Feb 12 '14 at 18:10
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