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How To Create a Flexible Plug-In Architecture?
...asy and not just possible to extend. This will let your plugin API be used more and will encourage end users to write plugins. Not just plugin developers. py.test does this well. Eclipse as far as I know, does not.
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Adding a Method to an Existing Object Instance
... <module>
AttributeError: A instance has no attribute 'barFighters'
More information can be found by reading about descriptors and metaclass programming.
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Iterate a list with indexes in Python
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Yep, that would be the enumerate function! Or more to the point, you need to do:
list(enumerate([3,7,19]))
[(0, 3), (1, 7), (2, 19)]
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Convert pandas dataframe to NumPy array
...stead.
See this section of the v0.24.0 release notes, and this answer for more information.
Towards Better Consistency: to_numpy()
In the spirit of better consistency throughout the API, a new method to_numpy has been introduced to extract the underlying NumPy array from DataFrames.
# Setup.
df =...
setup.py examples?
...can just browse the source of other projects for a file named setup.py for more examples.
These aren't simple examples; the tutorial link I gave has those. These are more complex, but also more practical.
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How to wrap text in LaTeX tables?
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\begin{tabular}{|p{1cm}|p{3cm}|}
This text will be wrapped & Some more text \\
\end{tabular}
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How to extract numbers from a string and get an array of ints?
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Pattern p = Pattern.compile("-?\\d+");
Matcher m = p.matcher("There are more than -2 and less than 12 numbers here");
while (m.find()) {
System.out.println(m.group());
}
... prints -2 and 12.
-? matches a leading negative sign -- optionally. \d matches a digit, and we need to write \ as \\...
How to overcome “datetime.datetime not JSON serializable”?
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Why doesn't c++ have &&= or ||= for booleans?
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How to copy a file to multiple directories using the gnu cp command
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Thanks for the answer! Now that I think about it a bit more, without extra flags (which do not exist) cp will not know what is the source and what is the DEST dir.
– Tom Feiner
Oct 12 '08 at 16:39
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