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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...
How to write loop in a Makefile?
...by your use of ./a.out, you're on a UNIX-type platform.
for number in 1 2 3 4 ; do \
./a.out $$number ; \
done
Test as follows:
target:
for number in 1 2 3 4 ; do \
echo $$number ; \
done
produces:
1
2
3
4
For bigger ranges, use:
target:
number=1 ; while [[ $$number...
How to start two threads at “exactly” the same time
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135
To start the threads at exactly the same time (at least as good as possible), you can use a Cyc...
How to remove element from an array in JavaScript?
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355
For a more flexible solution, use the splice() function. It allows you to remove any item in ...
What's the difference between “Layers” and “Tiers”?
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13 Answers
13
Active
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Python __str__ versus __unicode__
... method:
def __str__(self):
return unicode(self).encode('utf-8')
In 3.0, str contains characters, so the same methods are named __bytes__() and __str__(). These behave as expected.
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Empty set literal?
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edited May 13 at 17:55
phoenix
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answ...
What is the most “pythonic” way to iterate over a list in chunks?
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36 Answers
36
Active
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Format a datetime into a string with milliseconds
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367
To get a date string with milliseconds (3 decimal places behind seconds), use this:
from date...
Python data structure sort list alphabetically
...ut[12]: ['constitute', 'Whim', 'Stem', 'Sedge', 'Intrigue', 'Eflux']
In [13]: sorted(lst, key=str.lower, reverse=True)
Out[13]: ['Whim', 'Stem', 'Sedge', 'Intrigue', 'Eflux', 'constitute']
Please note: If you work with Python 3, then str is the correct data type for every string that contains hum...