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How can I delete one element from an array by value
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I think I've figured it out:
a = [3, 2, 4, 6, 3, 8]
a.delete(3)
#=> 3
a
#=> [2, 4, 6, 8]
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Python integer division yields float
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292
Take a look at PEP-238: Changing the Division Operator
The // operator will be available t...
What is non-blocking or asynchronous I/O in Node.js?
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2 Answers
2
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Is there a better way to iterate over two lists, getting one element from each list for each iterati
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264
This is as pythonic as you can get:
for lat, long in zip(Latitudes, Longitudes):
print la...
Difference between a Seq and a List in Scala
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answered Jun 2 '12 at 23:48
Daniel C. SobralDaniel C. Sobral
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What does a b prefix before a python string mean?
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Script parameters in Bash
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125
The arguments that you provide to a bashscript will appear in the variables $1 and $2 and $3 wh...
Splitting a list into N parts of approximately equal length
... equal parts? For example, 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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pandas GroupBy columns with NaN (missing) values
...e groupby (e.g. -1):
In [11]: df.fillna(-1)
Out[11]:
a b
0 1 4
1 2 -1
2 3 6
In [12]: df.fillna(-1).groupby('b').sum()
Out[12]:
a
b
-1 2
4 1
6 3
That said, this feels pretty awful hack... perhaps there should be an option to include NaN in groupby (see this github issue ...