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Python - abs vs fabs
I noticed that in python there are two similar looking methods for finding the absolute value of a number:
4 Answers
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How to convert an array of strings to an array of floats in numpy?
...(float, list_of_strings)) (or equivalently, use a list comprehension). (In Python 3, you'll need to call list on the map return value if you use map, since map returns an iterator now.)
However, if it's already a numpy array of strings, there's a better way. Use astype().
import numpy as np
x = n...
Peak-finding algorithm for Python/SciPy
... that only works on those particular images. I adapted a MATLAB script to Python and it works decently.
– endolith
Dec 17 '09 at 18:30
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Append integer to beginning of list in Python [duplicate]
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It would be nice for python to add a list.push_front(item) function. This will be obvious and less error-prone.
– Kemin Zhou
Sep 18 '16 at 3:21
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Split a string by a delimiter in python
...stackoverflow.com%2fquestions%2f3475251%2fsplit-a-string-by-a-delimiter-in-python%23new-answer', 'question_page');
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How to make a class JSON serializable
How to make a Python class serializable?
33 Answers
33
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Convert sqlalchemy row object to python dict
...e function is too long and not suited for some tastes here is a one liner (python 2.7+)
row2dict = lambda r: {c.name: str(getattr(r, c.name)) for c in r.__table__.columns}
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It is more efficient to use if-return-return or if-else-return?
...code has to perform a jump if the if condition is false anyway.
Note that Python supports a syntax that allows you to use only one return statement in your case:
return A+1 if A > B else A-1
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Correct way to try/except using Python requests module?
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How do I remove a substring from the end of a string in Python?
...ou're probably better of looking into the urlparse library that comes with python.
If you on the other hand you simply want to remove everything after the final '.' in a string then
url.rsplit('.',1)[0]
will work. Or if you want just want everything up to the first '.' then try
url.split...