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Python Empty Generator Function
In python, one can easily define an iterator function, by putting the yield keyword in the function's body, such as:
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Getting number of elements in an iterator in Python
Is there an efficient way to know how many elements are in an iterator in Python, in general, without iterating through each and counting?
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In Python, when to use a Dictionary, List or Set?
..., if for some weird reason you couldn't import collections, or, in pre-2.7 Python as a collections.defaultdict(int), using the items as keys and the associated value as the count).
Checking for membership of a value in a set (or dict, for keys) is blazingly fast (taking about a constant, short time...
Representing graphs (data structure) in Python
How can one neatly represent a graph in Python ? (Starting from scratch i.e. no libraries!) What data structure (e.g. dicts/tuples/dict(tuples)) will be fast but also memory efficient? One must be able to do various graph operations on it.
As pointed out, the various graph representations...
Check if something is (not) in a list in Python
I have a list of tuples in Python , and I have a conditional where I want to take the branch ONLY if the tuple is not in the list (if it is in the list, then I don't want to take the if branch)
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How do I find the time difference between two datetime objects in python?
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Reference: docs.python.org/library/datetime.html#datetime-objects. Read "supported operations".
– S.Lott
Aug 28 '09 at 10:08
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Typing Enter/Return key using Python and Selenium?
...ment is for Java, for other languages it is maybe a different, for example python: from selenium.webdriver.common.keys import Keys
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__lt__ instead of __cmp__
Python 2.x has two ways to overload comparison operators, __cmp__ or the "rich comparison operators" such as __lt__ . The rich comparison overloads are said to be preferred, but why is this so?
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Add a new item to a dictionary in Python [duplicate]
I want to add an item to an existing dictionary in Python. For example, this is my dictionary:
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What is the Python equivalent of Matlab's tic and toc functions?
What is the Python equivalent of Matlab's tic and toc functions ?
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