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How to ignore files which are in repository?
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answered Aug 29 '11 at 15:37
VonCVonC
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Iterating through directories with Python
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edited Dec 9 '19 at 12:57
answered Oct 25 '13 at 10:39
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Run a callback only if an attribute has changed in Rails
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200
Rails 5.1+
class Page < ActiveRecord::Base
before_save :do_something, if: :will_save_cha...
Literal suffix for byte in .NET?
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edited Aug 9 '17 at 12:48
Shimmy Weitzhandler
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what is the difference between ?:, ?! and ?= in regex?
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answered May 29 '12 at 18:43
sepp2ksepp2k
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Split comma-separated strings in a column into separate rows
...ackage (see code below).
The sample data given by the OP consists only of 20 rows. To create larger data frames, these 20 rows are simply repeated 1, 10, 100, 1000, 10000, and 100000 times which give problem sizes of up to 2 million rows.
Benchmark results
The benchmark results show that for s...
Filtering a list of strings based on contents
...in k]
['ab', 'abc']
Another way is to use the filter function. In Python 2:
>>> filter(lambda k: 'ab' in k, lst)
['ab', 'abc']
In Python 3, it returns an iterator instead of a list, but you can cast it:
>>> list(filter(lambda k: 'ab' in k, lst))
['ab', 'abc']
Though it's be...
How to convert list of key-value tuples into dictionary?
...zip it. ValueError: dictionary update sequence element #0 has length 1916; 2 is required
THAT is your actual question.
The answer is that the elements of your list are not what you think they are. If you type myList[0] you will find that the first element of your list is not a two-tuple, e.g. ('A...
Why does Popen.communicate() return b'hi\n' instead of 'hi'?
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22
The echo command by default returns a newline character
Compare with this:
print(subprocess.P...
iOS 7 status bar back to iOS 6 default style in iPhone app?
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