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Can Python print a function definition?
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If you are importing the function, you can use inspect.getsource:
>>> import re
>>> import inspect
>>> print inspect.getsource(re.compile)
def compile(pattern, flags=0):
"Compile a regular expr...
How to count the number of true elements in a NumPy bool array
...type=bool)
>>> np.sum(boolarr)
5
Of course, that is a bool-specific answer. More generally, you can use numpy.count_nonzero.
>>> np.count_nonzero(boolarr)
5
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How to use git merge --squash?
...ngle commit from the merged changes.
Omitting the -m parameter lets you modify a draft commit message containing every message from your squashed commits before finalizing your commit.
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zsh compinit: insecure directories
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what if you have no root
– kirill_igum
Feb 20 '13 at 0:35
2
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What is “Argument-Dependent Lookup” (aka ADL, or “Koenig Lookup”)?
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Koenig Lookup, or Argument Dependent Lookup, describes how unqualified names are looked up by the compiler in C++.
The C++11 standard § 3.4.2/1 states:
When the postfix-expression in a function call (5.2.2) is an unqualified-id, other namespaces not considered during the usual unqual...
How can I change the text inside my with jQuery?
... span').html('baa baa <strong>black sheep</strong>');
text() if just text content. html() if it contains, well, html content.
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sed command with -i option failing on Mac, but works on Linux
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If you use the -i option you need to provide an extension for your backups.
If you have:
File1.txt
File2.cfg
The command (note the lack of space between -i and '' and the -e to make it work on new versions of Mac and on G...
What is the at sign (@) in a batch file and what does it do?
...ppend command arguments stored in a text file. The syntax is exe@commands (if I remember correctly)
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Hamcrest compare collections
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If you want to assert that the two lists are identical, don't complicate things with Hamcrest:
assertEquals(expectedList, actual.getList());
If you really intend to perform an order-insensitive comparison, you can call the...
Serialize an object to XML
...or behavior for XmlWriter to dispose your StringWriter. As a general rule, if you declare something that needs disposing you're responsible for disposing of it. And implicit to that rule, anything you don't declare yourself you shouldn't dispose. So both usings are necessary.
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