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How do I concatenate two lists in Python?
How do I concatenate two lists in Python?
24 Answers
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Text Progress Bar in the Console [closed]
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Python 3
A Simple, Customizable Progress Bar
Here's an aggregate of many of the answers below that I use regularly (no imports required).
Note: All code in this answer was created for Python 3; see end of answer to use this c...
Join a list of items with different types as string in Python
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Calling str(...) is the Pythonic way to convert something to a string.
You might want to consider why you want a list of strings. You could instead keep it as a list of integers and only convert the integers to strings when you need to display them...
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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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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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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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:
5 Answers
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In Python script, how do I set PYTHONPATH?
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You don't set PYTHONPATH, you add entries to sys.path. It's a list of directories that should be searched for Python packages, so you can just append your directories to that list.
sys.path.append('/path/to/whatever')
In fact, sys.path ...
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...