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Python: Get the first character of the first string in a list?
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139
You almost had it right. The simplest way is
mylist[0][0] # get the first character from th...
Is it possible to set a number to NaN or infinity?
...gt;>> float('Inf') == float('Inf')
True
>>> float('Inf') == 1
False
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Bootstrap carousel multiple frames at once
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14 Answers
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ValueError: math domain error
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134
Your code is doing a log of a number that is less than or equal to zero. That's mathematically...
Difference between MEAN.js and MEAN.io
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edited Jul 29 '15 at 15:21
answered Apr 21 '14 at 22:16
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Pandas dataframe get first row of each group
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>>> df.groupby('id').first()
value
id
1 first
2 first
3 first
4 second
5 first
6 first
7 fourth
If you need id as column:
>>> df.groupby('id').first().reset_index()
id value
0 1 first
1 2 first
2 3 first
3 4 seco...
Best way of returning a random boolean value
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edited Aug 23 '15 at 7:45
answered Nov 4 '11 at 16:43
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Why is GHC so large/big?
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188
It's a bit silly really. Every library that comes with GHC is provided in no less than 4 flav...