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Combine two columns of text in pandas dataframe
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18 Answers
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How to convert a set to a list in python?
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197
It is already a list
type(my_set)
>>> <type 'list'>
Do you want something li...
What would cause an algorithm to have O(log n) complexity?
...ere are a few:
Repeatedly dividing by a constant
Take any number n; say, 16. How many times can you divide n by two before you get a number less than or equal to one? For 16, we have that
16 / 2 = 8
8 / 2 = 4
4 / 2 = 2
2 / 2 = 1
Notice that this ends up taking four steps to complete. Inte...
Determine device (iPhone, iPod Touch) with iOS
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31 Answers
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How to get unique values in an array
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120
Since I went on about it in the comments for @Rocket's answer, I may as well provide an exampl...
Turning a Comma Separated string into individual rows
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16 Answers
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Redirect STDERR / STDOUT of a process AFTER it's been started, using command line?
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126
Short of closing and reopening your tty (i.e. logging off and back on, which may also terminat...
Efficient way to insert a number into a sorted array of numbers?
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15 Answers
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How to print a percentage value in python?
...entage floating point precision type:
>>> print "{0:.0%}".format(1./3)
33%
If you don't want integer division, you can import Python3's division from __future__:
>>> from __future__ import division
>>> 1 / 3
0.3333333333333333
# The above 33% example would could now b...