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Understanding how recursive functions work
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107
I think the confusion is stemming from thinking of it as "the same function" being called many ...
add a string prefix to each value in a string column using Pandas
...['col'].astype(str)
Example:
>>> df = pd.DataFrame({'col':['a',0]})
>>> df
col
0 a
1 0
>>> df['col'] = 'str' + df['col'].astype(str)
>>> df
col
0 stra
1 str0
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How do I write a “tab” in Python?
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Drew Dormann
47.5k1111 gold badges101101 silver badges153153 bronze badges
answered Dec 20 '10 at 10:07
SimoneSimone
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pandas read_csv and filter columns with usecols
...andas as pd
from StringIO import StringIO
csv = r"""dummy,date,loc,x
bar,20090101,a,1
bar,20090102,a,3
bar,20090103,a,5
bar,20090101,b,1
bar,20090102,b,3
bar,20090103,b,5"""
df = pd.read_csv(StringIO(csv),
header=0,
index_col=["date", "loc"],
usecols=["date", "loc", "x"],
...
How to add a new audio (not mixing) into a video using ffmpeg?
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308
Replace audio
ffmpeg -i video.mp4 -i audio.wav -map 0:v -map 1:a -c:v copy -shortest output.mp...
How do I format a long integer as a string without separator in Java?
... |
edited Jan 22 '16 at 20:19
RAnders00
4,20144 gold badges2929 silver badges5757 bronze badges
answere...
Cosine Similarity between 2 Number Lists
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180
You should try SciPy. It has a bunch of useful scientific routines for example, "routines for co...
Custom Python list sorting
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60
It's documented here.
The sort() method takes optional arguments for controlling the
comp...
The located assembly's manifest definition does not match the assembly reference
...g to run some unit tests in a C# Windows Forms application (Visual Studio 2005), and I get the following error:
53 Answers
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Getting the first and last day of a month, using a given DateTime object
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edited Feb 29 at 23:04
Fyodor Soikin
59.5k66 gold badges9898 silver badges140140 bronze badges
ans...