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How do you detect Credit card type based on number?
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781
+50
The credi...
How to sort a dataFrame in python pandas by two or more columns?
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As of the 0.17.0 release, the sort method was deprecated in favor of sort_values. sort was completely removed in the 0.20.0 release. The arguments (and results) remain the same:
df.sort_values(['a', 'b'], ascending=[True, False])
Y...
Email Address Validation in Android on EditText [duplicate]
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edited Feb 21 at 13:14
milosmns
2,53933 gold badges2727 silver badges3838 bronze badges
an...
Looping over a list in Python
...n mylist[:] and your len(x) should be equal to 3.
>>> mylist = [[1,2,3],[4,5,6,7],[8,9,10]]
>>> for x in mylist:
... if len(x)==3:
... print x
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[1, 2, 3]
[8, 9, 10]
or if you need more pythonic use list-comprehensions
>>> [x for x in mylist if len(x)==3...
python assert with and without parenthesis
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130
The last assert would have given you a warning (SyntaxWarning: assertion is always true, perha...
awk without printing newline
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awk '{sum+=$3}; END {printf "%f",sum/NR}' ${file}_${f}_v1.xls >> to-plot-p.xls
print will insert a newline by default. You dont want that to happen, hence use printf instead.
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How to convert a negative number to positive?
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216
>>> n = -42
>>> -n # if you know n is negative
42
>>> abs(n) ...
How to get a DOM Element from a JQuery Selector
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edited Jul 17 '16 at 9:16
Mosh Feu
21.9k1212 gold badges6868 silver badges105105 bronze badges
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Check if a table exists in Rails
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edited Mar 29 '17 at 2:24
answered Jul 5 '11 at 23:49
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