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How to split a string in shell and get the last field
Suppose I have the string 1:2:3:4:5 and I want to get its last field ( 5 in this case). How do I do that using Bash? I tried cut , but I don't know how to specify the last field with -f .
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How to find the installed pandas version
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375
Check pandas.__version__:
In [76]: import pandas as pd
In [77]: pd.__version__
Out[77]: '0.1...
Python 3.x rounding behavior
I was just re-reading What’s New In Python 3.0 and it states:
11 Answers
11
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Javascript - remove an array item by value [duplicate]
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223
You'll want to use JavaScript's Array splice method:
var tag_story = [1,3,56,6,8,90],
id_ta...
Pandas groupby: How to get a union of strings
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In [5]: df
Out[5]:
A B C
0 1 0.749065 This
1 2 0.301084 is
2 3 0.463468 a
3 4 0.643961 random
4 1 0.866521 string
5 2 0.120737 !
In [6]: df.dtypes
Out[6]:
A int64
B float64
C object
dtype: object
When you apply your own function, t...
How to select rows from a DataFrame based on column values?
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4135
To select rows whose column value equals a scalar, some_value, use ==:
df.loc[df['column_name'...
Remove duplicated rows
...only need the first three columns
deduped.data <- unique( yourdata[ , 1:3 ] )
# the fourth column no longer 'distinguishes' them,
# so they're duplicates and thrown out.
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How to round to 2 decimals with Python?
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answered Dec 8 '13 at 18:20
roliszrolisz
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Get index of array element faster than O(n)
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edited Feb 13 '13 at 0:37
answered Jun 5 '11 at 10:41
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Delete specific line number(s) from a text file using sed?
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384
If you want to delete lines 5 through 10 and 12:
sed -e '5,10d;12d' file
This will print th...