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How do I create a namespace package in Python?
...rate downloads. For example, with the directories Package-1 and Package-2 in PYTHONPATH ,
5 Answers
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What is Unicode, UTF-8, UTF-16?
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+250
Why do we need Unicode?
In the (not too) early days, all that existed was ASCII. This was okay, as all that would ever be needed we...
Diff output from two programs without temporary files
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213
Use <(command) to pass one command's output to another program as if it were a file name. B...
Drop columns whose name contains a specific string from pandas DataFrame
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import pandas as pd
import numpy as np
array=np.random.random((2,4))
df=pd.DataFrame(array, columns=('Test1', 'toto', 'test2', 'riri'))
print df
Test1 toto test2 riri
0 0.923249 0.572528 0.845464 0.144891
1 0.020438 0.332540 0.144455 0.741412
cols = [c for...
What is the PostgreSQL equivalent for ISNULL()
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edited Jan 14 '12 at 2:28
Erwin Brandstetter
439k9696 gold badges809809 silver badges969969 bronze badges
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How does functools partial do what it does?
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227
Roughly, partial does something like this (apart from keyword args support etc):
def partial(...
Select first row in each GROUP BY group?
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On Oracle 9.2+ (not 8i+ as originally stated), SQL Server 2005+, PostgreSQL 8.4+, DB2, Firebird 3.0+, Teradata, Sybase, Vertica:
WITH summary AS (
SELECT p.id,
p.customer,
p.total,
ROW_NUMBER() OV...
Linux bash: Multiple variable assignment
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228
First thing that comes into my mind:
read -r a b c <<<$(echo 1 2 3) ; echo "$a|$b|$c...
String formatting named parameters?
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In Python 2.6+ and Python 3, you might choose to use the newer string formatting method.
print('<a href="{0}">{0}</a>'.format(my_url))
which saves you from repeating the argument, or
print('<a href="{url}">{url}&l...
How to identify if the DLL is Debug or Release build (in .NET) [duplicate]
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2 Answers
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