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Linux command or script counting duplicated lines in a text file?

... Here is a simple python script using the Counter type. The benefit is that this does not require sorting the file, essentially using zero memory: import collections import fileinput import json print(json.dumps(collections.Counter(map(str.st...
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Google Authenticator available as a public service?

...ou can use my solution, posted as the answer to my question (there is full Python code and explanation): Google Authenticator implementation in Python It is rather easy to implement it in PHP or Perl, I think. If you have any problems with this, please let me know. I have also posted my code ...
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How to write a multidimensional array to a text file?

... oned_as='row') # For the above line, I specified the kwarg oned_as since python (2.7 with # numpy 1.6.1) throws a FutureWarning. Here, this isn't really necessary # since oned_as is a kwarg for dealing with 1-D arrays. # Now load in the data from the .mat that was just saved matdata = scipy.io...
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How to subtract a day from a date?

I have a Python datetime.datetime object. What is the best way to subtract one day? 6 Answers ...
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Why does this iterative list-growing code give IndexError: list assignment index out of range?

...ist. You'd just do: j = list(i) Alternatively, if you wanted to use the Python list like an array in other languages, then you could pre-create a list with its elements set to a null value (None in the example below), and later, overwrite the values in specific positions: i = [1, 2, 3, 5, 8, 13]...
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Aliases in Windows command prompt

...;"C:\Program Files\Sublime Text 2\" :: Add to path by command DOSKEY add_python26=set PATH=%PATH%;"C:\Python26\" DOSKEY add_python33=set PATH=%PATH%;"C:\Python33\" :: Commands DOSKEY ls=dir /B DOSKEY sublime=sublime_text $* ::sublime_text.exe is name of the executable. By adding a temporar...
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How can I tell PyCharm what type a parameter is expected to be?

...o reStructuredText and docstring conventions (PEP 257). Another option is Python 3 annotations. Please refer to the PyCharm documentation section for more details and samples. share | improve this...
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What is the preferred syntax for initializing a dict: curly brace literals {} or the dict() function

I'm putting in some effort to learn Python, and I am paying close attention to common coding standards. This may seem like a pointlessly nit-picky question, but I am trying to focus on best-practices as I learn, so I don't have to unlearn any 'bad' habits. ...
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Understanding dict.copy() - shallow or deep?

...w copy of the dictionary. Same goes for the book I am following (Beazley's Python Reference), which says: 7 Answers ...
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CSV new-line character seen in unquoted field error

...n OSX. Hope it works across other platforms too... – python1981 Aug 2 '17 at 4:36 Great answer. Using - "dialect=csv.e...