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pandas read_csv and filter columns with usecols
...s as pd
from StringIO import StringIO
csv = r"""dummy,date,loc,x
bar,20090101,a,1
bar,20090102,a,3
bar,20090103,a,5
bar,20090101,b,1
bar,20090102,b,3
bar,20090103,b,5"""
df = pd.read_csv(StringIO(csv),
header=0,
index_col=["date", "loc"],
usecols=["date", "loc", "x"],
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How to exclude property from Json Serialization
...pmentDate { get; set; }
}
Refer http://james.newtonking.com/archive/2009/10/23/efficient-json-with-json-net-reducing-serialized-json-size for more details
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How do you generate dynamic (parameterized) unit tests in python?
...hod testing
– Nakilon
Apr 12 '13 at 10:38
7
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Finding the source code for built-in Python functions?
...other builtins).
– peter.slizik
Sep 10 at 10:02
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Swift equivalent for MIN and MAX macros
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edited Feb 24 '16 at 23:10
answered Aug 22 '14 at 19:51
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Python division
I was trying to normalize a set of numbers from -100 to 0 to a range of 10-100 and was having problems only to notice that even with no variables at all, this does not evaluate the way I would expect it to:
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SQL Server Index Naming Conventions [closed]
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edited May 6 '10 at 18:59
Mark Byers
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GCC dump preprocessor defines
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answered Feb 8 '10 at 19:42
philantphilant
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JavaScript function to add X months to a date
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answered Apr 24 '10 at 21:13
ChadChad
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Why is __init__() always called after __new__()?
...ce creation process such as the singleton pattern. In fact, with less than 10 lines of code you can implement a Singleton metaclass that then doesn't even require you to futz with __new__ at all, and can turn any otherwise-normal class into a singleton by simply adding __metaclass__ = Singleton!
cl...