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What are the differences between numpy arrays and matrices? Which one should I use?
... 2]
# [3 4]]
print(a*b)
# [[13 20]
# [ 5 8]]
On the other hand, as of Python 3.5, NumPy supports infix matrix multiplication using the @ operator, so you can achieve the same convenience of matrix multiplication with ndarrays in Python >= 3.5.
import numpy as np
a = np.array([[4, 3], [2, 1...
Filter by property
...filters operate at the database level, generating SQL. To filter based on Python properties, you have to load the object into Python to evaluate the property--and at that point, you've already done all the work to load it.
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Batch Renaming of Files in a Directory
...asy way to rename a group of files already contained in a directory, using Python?
13 Answers
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Determine the type of an object?
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It might be more Pythonic to use a try...except block. That way, if you have a class which quacks like a list, or quacks like a dict, it will behave properly regardless of what its type really is.
To clarify, the preferred method of "telling...
How can I pass data from Flask to JavaScript in a template?
...;/body>
</html>
Jinja also offers more advanced constructs from Python, so you can shorten it to:
<html>
<head>
<script>
var myGeocode = [{{ ', '.join(geocode) }}];
</script>
</head>
<body>
<p>Hello World</p>
<button onclick=...
Getting the last element of a list
In Python, how do you get the last element of a list?
12 Answers
12
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Line continuation for list comprehensions or generator expressions in python
...59%2fline-continuation-for-list-comprehensions-or-generator-expressions-in-python%23new-answer', 'question_page');
}
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Post as a guest
Name
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What are the relative strengths and weaknesses of Git, Mercurial, and Bazaar? [closed]
..., and is scriptable; Mercurial is written in C (core, for performance) and Python, and provides API for extensions; Bazaar is written in Python, and provides API for extensions.
In considering each of them with one another and against version control systems like SVN and Perforce, what issues sho...
Why use Ruby instead of Smalltalk? [closed]
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I'm more of a Pythonista than a Ruby user, however the same things hold for Ruby for much the same reasons.
The architecture of Smalltalk is somewhat insular whereas Python and Ruby were built from the ground up to facilitate integration...
Using Pylint with Django
I would very much like to integrate pylint into the build process for
my python projects, but I have run into one show-stopper: One of the
error types that I find extremely useful--: E1101: *%s %r has no %r
member* --constantly reports errors when using common django fields,
for example:
...