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Get the first element of each tuple in a list in Python [duplicate]
...r x in rows]
Below is a demonstration:
>>> rows = [(1, 2), (3, 4), (5, 6)]
>>> [x[0] for x in rows]
[1, 3, 5]
>>>
Alternately, you could use unpacking instead of x[0]:
res_list = [x for x,_ in rows]
Below is a demonstration:
>>> lst = [(1, 2), (3, 4), (...
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onkar
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answered Dec 29 '11 at 21:41
Paul GrimePaul G...
Why is quicksort better than mergesort?
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edited May 19 '14 at 6:59
answered Sep 16 '08 at 9:14
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How to tell if a tag failed to load
...nd I'd like to be able to tell whether the loading failed in some way -- a 404, a script error in the loaded script, whatever.
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What is the “hasClass” function with plain JavaScript?
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MVC 5 Seed Users and Roles
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edited Nov 1 '15 at 4:38
Shimmy Weitzhandler
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How can I pass a list as a command-line argument with argparse?
...t;Required> Set flag', required=True)
# Use like:
# python arg.py -l 1234 2345 3456 4567
nargs='+' takes 1 or more arguments, nargs='*' takes zero or more.
append
parser.add_argument('-l','--list', action='append', help='<Required> Set flag', required=True)
# Use like:
# python arg.py -...
Is it possible to run a single test in MiniTest?
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I'm looking for similar functionality to rspec path/to/file.rb -l 25
Yup! Use Nick Quarant...
Pass a PHP array to a JavaScript function [duplicate]
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4 Answers
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