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Finding all possible combinations of numbers to reach a given sum

...ning, target, partial + [n]) if __name__ == "__main__": subset_sum([3,9,8,4,5,7,10],15) #Outputs: #sum([3, 8, 4])=15 #sum([3, 5, 7])=15 #sum([8, 7])=15 #sum([5, 10])=15 This type of algorithms are very well explained in the following Standford's Abstract Programming lec...
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How to JSON serialize sets?

...owing that it can handle lists, dicts, and sets: >>> data = [1,2,3, set(['knights', 'who', 'say', 'ni']), {'key':'value'}, Decimal('3.14')] >>> j = dumps(data, cls=PythonObjectEncoder) >>> loads(j, object_hook=as_python_object) [1, 2, 3, set(['knights', 'say', 'who', 'n...
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Regex Email validation

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Writing outputs to log file and console

... exec 3>&1 1>>${LOG_FILE} 2>&1 would send stdout and stderr output into the log file, but would also leave you with fd 3 connected to the console, so you can do echo "Some console message" 1>&3 to wr...
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Iterating over dictionaries using 'for' loops

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Why isn't my Pandas 'apply' function referencing multiple columns working? [closed]

... 381 Seems you forgot the '' of your string. In [43]: df['Value'] = df.apply(lambda row: my_test(r...
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No module named setuptools

...ific system. – rob May 2 '16 at 19:53 25 Debian/ubuntu: apt-get install -y python-setuptools ...
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Should I use encoding declaration in Python 3?

Python 3 uses UTF-8 encoding for source-code files by default. Should I still use the encoding declaration at the beginning of every source file? Like # -*- coding: utf-8 -*- ...
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Access an arbitrary element in a dictionary in Python

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Grep regex NOT containing string

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