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Why doesn't os.path.join() work in this case?
...d an "absolute path" and everything before them is discarded.
Quoting the Python docs for os.path.join:
If a component is an absolute path, all previous components are thrown away and joining continues from the absolute path component.
Note on Windows, the behaviour in relation to drive lette...
Combine Date and Time columns using python pandas
I have a pandas dataframe with the following columns;
11 Answers
11
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Can you list the keyword arguments a function receives?
...argdict) and not invalidArgs(func, argdict)
(This is good only as far as python's arg parsing. Any runtime checks for invalid values in kwargs obviously can't be detected.)
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How to remove an element from a list by index
How do I remove an element from a list by index in Python?
18 Answers
18
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Two way/reverse map [duplicate]
I'm doing this switchboard thing in python where I need to keep track of who's talking to whom, so if Alice --> Bob, then that implies that Bob --> Alice.
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Why do people say that Ruby is slow? [closed]
...s, but the language is very important too. Dynamic languages like Ruby and Python are slower than static typed languages simply because they require lots of type checking at runtime. Monkey patching is cool, but it is expensive.
– Wilson Freitas
Sep 11 at 19:09...
Determine if 2 lists have the same elements, regardless of order? [duplicate]
...are unique) as well as hashable (which strings and other certain immutable python objects are), the most direct and computationally efficient answer uses Python's builtin sets, (which are semantically like mathematical sets you may have learned about in school).
set(x) == set(y) # prefer this if e...
Python Matplotlib Y-Axis ticks on Right Side of Plot
...new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f10354397%2fpython-matplotlib-y-axis-ticks-on-right-side-of-plot%23new-answer', 'question_page');
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Principal component analysis in Python
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Months later, here's a small class PCA, and a picture:
#!/usr/bin/env python
""" a small class for Principal Component Analysis
Usage:
p = PCA( A, fraction=0.90 )
In:
A: an array of e.g. 1000 observations x 20 variables, 1000 rows x 20 columns
fraction: use principal components that...
How does collections.defaultdict work?
I've read the examples in python docs, but still can't figure out what this method means. Can somebody help? Here are two examples from the python docs
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