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what is the difference between 'transform' and 'fit_transform' in sklearn
In the sklearn-python toolbox, there are two functions transform and fit_transform about sklearn.decomposition.RandomizedPCA . The description of two functions are as follows
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Regex: matching up to the first occurrence of a character
...for me as I was trying to figure out how to match all the characters in an xml tag including attributes. I was running into the "matches everything to the end" problem with:
/<simpleChoice.*>/
but was able to resolve the issue with:
/<simpleChoice[^>]*>/
after reading this post....
Deleting all pending tasks in celery / rabbitmq
...y
$ sudo kill <PID>
$ sudo /etc/init.d/celeryd stop # Confim dead
$ python manage.py celery amqp queue.purge analytics
$ sudo rabbitmqctl list_queues -p celery name messages consumers # Confirm messages is 0
$ sudo /etc/init.d/celeryd start
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Determining the last changelist synced to in Perforce
...rge (over 850000); see 'p4 help maxresults'.
$ p4 -G files "./...#have" | python c:/cygwin/usr/local/bin/p4lastchange.py
Files: 266948
2427657
where p4lastchange.py is based on the code from the Using P4G.py From the Command Line presentation by J.T.Goldstone, Kodak Information Network/Ofoto, Apr...
How can I remove a pytz timezone from a datetime object?
...ware and timezone naive
dbDatetimeNoTz == arrowDt # False, or TypeError on python versions before 3.3
# compare datetimes that are both aware or both naive work however
dbDatetimeNoTz == arrowDt.replace(tzinfo=None) # True
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How to express a One-To-Many relationship in Django
...E)
if we want to get the list of wheels of particular car. we will use python's auto generated object wheel_set. For car c you will use c.wheel_set.all()
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Turn a string into a valid filename?
...want to remove all characters that wouldn't be allowed in filenames, using Python.
23 Answers
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How to get CRON to call in the correct PATHs
I'm trying to get cron to call in the correct PATHs. When I run a Python script from shell the script runs fine as it uses the PATHs set in bashrc but when I use cron all the PATHs are not used from bashrc. Is there a file I can enter the PATHs into for cron like bashrc or a way to call the PATHs fr...
Eclipse reports rendering library more recent than ADT plug-in
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Am i change API version 17, 19, 21, & 23 in xml layoutside
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Updated Android Development Tools 23.0.7 but still can't render layout proper so am i updated Android DDMS 23.0.7 it's works perfect..!!!
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How to jump to a particular line in a huge text file?
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linecache:
The linecache module allows one to get any line from a Python source file, while attempting to optimize internally, using a cache, the common case where many lines are read from a single file. This is used by the traceback module to retrieve source lines for inclusion in the form...