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Escape regex special characters in a Python string
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203
Use re.escape
>>> import re
>>> re.escape(r'\ a.*$')
'\\\\\\ a\\.\\*\\$'
>...
Python nonlocal statement
What does the Python nonlocal statement do (in Python 3.0 and later)?
9 Answers
9
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In which order should floats be added to get the most precise result?
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107
Your instinct is basically right, sorting in ascending order (of magnitude) usually improves th...
How to copy yanked text to VI command prompt
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answered May 25 '09 at 12:28
Mykola GolubyevMykola Golubyev
50k1414 gold badges7979 silver badges100100 bronze badges
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What are deferred objects?
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101
Deferred Object
As of jQuery 1.5, the Deferred object provides a way to register multiple callb...
Equivalent of Math.Min & Math.Max for Dates?
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answered Dec 31 '09 at 13:27
GuffaGuffa
619k9090 gold badges651651 silver badges926926 bronze badges
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How to concatenate two MP4 files using FFmpeg?
...peg -i opening.mkv -i episode.mkv -i ending.mkv \
-filter_complex "[0:v] [0:a] [1:v] [1:a] [2:v] [2:a]
concat=n=3:v=1:a=1 [v] [a]" \
-map "[v]" -map "[a]" output.mkv
Note that this method performs a re-encode.
2. concat demuxer
Use this method when you want...
Regex for password must contain at least eight characters, at least one number and both lower and up
...?=.*[@$!%*?&])[A-Za-z\d@$!%*?&]{8,}$"
Minimum eight and maximum 10 characters, at least one uppercase letter, one lowercase letter, one number and one special character:
"^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[@$!%*?&])[A-Za-z\d@$!%*?&]{8,10}$"
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Transpose/Unzip Function (inverse of zip)?
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802
zip is its own inverse! Provided you use the special * operator.
>>> zip(*[('a', 1), ...
Insert a line break in mailto body
I would like to insert a line break into my mailto body.
I tried %0A, %0D and %0D%0A. Nothing worked for me.
I tested on Gmail, Yahoo, Apple Mail, Outlook 2010, Outlook.com and Thunderbird with Google Chrome on Mac OSX.
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