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Multiprocessing: How to use Pool.map on a function defined in a class?
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This doesn't work in Python 2.7.2 (default, Jun 12 2011, 15:08:59) [MSC v.1500 32 bit (Intel)] on win32
– ubershmekel
Feb 18 '12 at 19:03
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Python: try statement in a single line
Is there a way in python to turn a try/except into a single line?
12 Answers
12
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“unmappable character for encoding” warning in Java
...this solution. I added "-encoding UTF-8" as a compilerarg in my ant build.xml and I still get "warning: unmappable character for encoding ASCII". If I modify it to "-encoding jjjj" it won't compile, complaining "error: unsupported encoding: jjjj", so I know it is recognizing UTF-8, but it still se...
Why does substring slicing with index out of range work?
...ous. In the case of strings, the results appear to be identical because in Python, there's no such thing as an individual character outside of a string. A single character is just a 1-character string.
(For the exact semantics of slicing outside the range of a sequence, see mgilson's answer.)
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How to list imported modules?
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If you want to do this from outside the script:
Python 2
from modulefinder import ModuleFinder
finder = ModuleFinder()
finder.run_script("myscript.py")
for name, mod in finder.modules.iteritems():
print name
Python 3
from modulefinder import ModuleFinder
finder = M...
Creating an empty list in Python
What is the best way to create a new empty list in Python?
5 Answers
5
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Input and output numpy arrays to h5py
I have a Python code whose output is a sized matrix, whose entries are all of the type float . If I save it with the extension .dat the file size is of the order of 500 MB. I read that using h5py reduces the file size considerably. So, let's say I have the 2D numpy array named A . How do I ...
Access nested dictionary items via a list of keys?
... the dictionary:
from functools import reduce # forward compatibility for Python 3
import operator
def getFromDict(dataDict, mapList):
return reduce(operator.getitem, mapList, dataDict)
and reuse getFromDict to find the location to store the value for setInDict():
def setInDict(dataDict, mapL...
Light weight alternative to Hibernate? [closed]
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It still requires XML configuration, but have a look at MyBatis (formerly iBatis).
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How do I split a multi-line string into multiple lines?
... empty line) better than split('\n'). Back then (2008) I was just a newbie Pythonista and grepping though my scripts now shows that I too am using splitlines() almost exclusively. I'm therefore deleting my 104-point answer (*sob...*) and will be endorsing this one instead.
– ef...