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How can you set class attributes from variable arguments (kwargs) in python
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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 exactly does __attribute__((constructor)) work?
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answered Jan 12 '10 at 22:52
jannebjanneb
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Convert base-2 binary number string to int
...comprehension of the primitive way of converting binary to decimal ( e.g. 110 = 2**0 * 0 + 2 ** 1 * 1 + 2 ** 2 * 1)
add = lambda x,y : x + y
reduce(add, [int(x) * 2 ** y for x, y in zip(list(binstr), range(len(binstr) - 1, -1, -1))])
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How to import the class within the same directory or sub directory?
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answered Nov 10 '10 at 7:36
AmberAmber
421k7070 gold badges575575 silver badges516516 bronze badges
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How to find the installed pandas version
...sion__'
– jangorecki
May 26 '18 at 10:38
@jangorecki: pd.__version__ is defined here. If you are getting an Attribute...
Calling a class function inside of __init__
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Multiple variables in a 'with' statement?
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edited Oct 10 '19 at 17:10
Adrian W
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In mongoDb, how do you remove an array element by its index?
...dex. In fact, this is an open issue http://jira.mongodb.org/browse/SERVER-1014 , you may vote for it.
The workaround is using $unset and then $pull:
db.lists.update({}, {$unset : {"interests.3" : 1 }})
db.lists.update({}, {$pull : {"interests" : null}})
Update: as mentioned in some of the comm...