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python list by value not by reference [duplicate]
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As answered in the official Python FAQ:
b = a[:]
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Identifying the dependency relationship for python packages installed with pip
When I do a pip freeze I see large number of Python packages that I didn't explicitly install, e.g.
8 Answers
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Python: print a generator expression?
In the Python shell, if I enter a list comprehension such as:
5 Answers
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How does tuple comparison work in Python?
I have been reading the Core Python programming book, and the author shows an example like:
4 Answers
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Convert date to datetime in Python
Is there a built-in method for converting a date to a datetime in Python, for example getting the datetime for the midnight of the given date? The opposite conversion is easy: datetime has a .date() method.
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What does asterisk * mean in Python? [duplicate]
Does * have a special meaning in Python as it does in C? I saw a function like this in the Python Cookbook:
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What is a correct mime type for docx, pptx etc?
...ion and supplying MIME-type for each of them. Let the system do this job.
Python 3
Using python-magic
>>> pip install python-magic
>>> import magic
>>> magic.from_file("Employee.pdf", mime=True)
'application/pdf'
Using built-in mimeypes module - Map filenames to MimeT...
How do I abort the execution of a Python script? [duplicate]
I have a simple Python script that I want to stop executing if a condition is met.
8 Answers
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Mapping over values in a python dictionary
...hension:
my_dictionary = {k: f(v) for k, v in my_dictionary.items()}
In python 2.7, use the .iteritems() method instead of .items() to save memory. The dict comprehension syntax wasn't introduced until python 2.7.
Note that there is no such method on lists either; you'd have to use a list compre...
Printing Lists as Tabular Data
I am quite new to Python and I am now struggling with formatting my data nicely for printed output.
13 Answers
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