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Difference between staticmethod and classmethod
... function into a class because it logically belongs with the class. In the Python source code (e.g. multiprocessing,turtle,dist-packages), it is used to "hide" single-underscore "private" functions from the module namespace. Its use, though, is highly concentrated in just a few modules -- perhaps an...
Which is faster: Stack allocation or Heap allocation
... on_stack doesn't do anything useful and can be optimized away. GCC on my Linux laptop also notices that on_heap doesn't do anything useful, and optimizes it away as well:
on_stack took 0.000003 seconds
on_heap took 0.000002 seconds
...
Pip install Matplotlib error with virtualenv
...
Building Matplotlib requires libpng (and freetype, as well) which isn't a python library, so pip doesn't handle installing it (or freetype).
You'll need to install something along the lines of libpng-devel and freetype-devel (or whatever the equivalent is for your OS).
See the building requirem...
How do I check if a variable exists?
...d is likely to result in unpredictable behaviour.
If you need to do it in Python, the following trick, which is similar to yours, will ensure that a variable has some value before use:
try:
myVar
except NameError:
myVar = None
# Now you're free to use myVar without Python complaining.
H...
What version of javac built my jar?
...e or more classes from the jar. For example:
$ jar xf log4j-1.2.15.jar
On Linux, Mac OS X or Windows with Cygwin installed, the file(1) command knows the class version.
$ file ./org/apache/log4j/Appender.class
./org/apache/log4j/Appender.class: compiled Java class data, version 45.3
Or alternative...
How to check a string for specific characters?
How can I check if a string has several specific characters in it using Python 2?
5 Answers
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How to view revision history for Mercurial file?
... very nice! but 'hgtk' is now only a wrapper, please use 'thg' on linux
– milkplus
Dec 11 '11 at 18:32
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Difference between __str__ and __repr__?
What is the difference between __str__ and __repr__ in Python?
23 Answers
23
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How to get string objects instead of Unicode from JSON?
I'm using Python 2 to parse JSON from ASCII encoded text files.
21 Answers
21
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Numpy array dimensions
I'm currently trying to learn Numpy and Python. Given the following array:
8 Answers
8...