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How to pip install a package with min and max version range?
...hich should never be installed (theoretical api: pip install package<0.3 ).
3 Answers
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How to filter Pandas dataframe using 'in' and 'not in' like in SQL
...andas as pd
>>> df
country
0 US
1 UK
2 Germany
3 China
>>> countries_to_keep
['UK', 'China']
>>> df.country.isin(countries_to_keep)
0 False
1 True
2 False
3 True
Name: country, dtype: bool
>>> df[df.country.isin(countries_to_ke...
How to add a new row to an empty numpy array
...
237
The way to "start" the array that you want is:
arr = np.empty((0,3), int)
Which is an empty ...
CSS3 Transparency + Gradient
...
326
Yes. You can use rgba in both webkit and moz gradient declarations:
/* webkit example */
back...
How can I confirm a database is Oracle & what version it is using SQL?
...---------------------------------------
Oracle Database 10g Release 10.2.0.3.0 - 64bit Production
PL/SQL Release 10.2.0.3.0 - Production
CORE 10.2.0.3.0 Production
TNS for Solaris: Version 10.2.0.3.0 - Production
NLSRTL Version 10.2.0.3.0 - Production
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Splitting a list into N parts of approximately equal length
...e, if the list has 7 elements and is split it into 2 parts, we want to get 3 elements in one part, and the other should have 4 elements.
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How to round to 2 decimals with Python?
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answered Dec 8 '13 at 18:20
roliszrolisz
5,41011 gold badge1515 silver badges1414 bronze badges
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Undefined method 'task' using Rake 0.9.0
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edited Jul 31 '11 at 13:34
Peter Mortensen
26.5k2121 gold badges9292 silver badges122122 bronze badges
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Replacing NAs with latest non-NA value
...ry(zoo)
az <- zoo(1:6)
bz <- zoo(c(2,NA,1,4,5,2))
na.locf(bz)
1 2 3 4 5 6
2 2 1 4 5 2
na.locf(bz, fromLast = TRUE)
1 2 3 4 5 6
2 1 1 4 5 2
cz <- zoo(c(NA,9,3,2,3,2))
na.locf(cz)
2 3 4 5 6
9 3 2 3 2
shar...