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Calling Java from Python
... python (see the example in the project's main webpage, ListPrinter.java -> main -> GatewayServer.start()). This is a possible point of failure. I still think that the approach of JPype is excellent; only that it seems a dead project.
– David Portabella
S...
Case insensitive regular expression without re.compile?
...sitive marker, (?i) can be incorporated directly into the regex pattern:
>>> import re
>>> s = 'This is one Test, another TEST, and another test.'
>>> re.findall('(?i)test', s)
['Test', 'TEST', 'test']
...
List of installed gems?
..._index.search(dep)
puts specs[0..5].map{ |s| "#{s.name} #{s.version}" }
# >> Platform 0.4.0
# >> abstract 1.0.0
# >> actionmailer 3.0.5
# >> actionpack 3.0.5
# >> activemodel 3.0.5
# >> activerecord 3.0.5
Here's an updated way to get a list:
require 'rubygems...
Can you list the keyword arguments a function receives?
...ect directly and working out the variables is to use the inspect module.
>>> import inspect
>>> def func(a,b,c=42, *args, **kwargs): pass
>>> inspect.getargspec(func)
(['a', 'b', 'c'], 'args', 'kwargs', (42,))
If you want to know if its callable with a particular set of...
Get key by value in dictionary
...sponding unique values. You can then look up things symmetrically value --> key or key --> value
– pfabri
May 13 at 16:34
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Efficient way to rotate a list in python
...
Numpy can do this using the roll command:
>>> import numpy
>>> a=numpy.arange(1,10) #Generate some data
>>> numpy.roll(a,1)
array([9, 1, 2, 3, 4, 5, 6, 7, 8])
>>> numpy.roll(a,-1)
array([2, 3, 4, 5, 6, 7, 8, 9, 1])
>>> nump...
How to print a dictionary line by line in Python?
....stdout):
spacing = ' '
if isinstance(obj, dict):
print >> output, '%s{' % ((nested_level) * spacing)
for k, v in obj.items():
if hasattr(v, '__iter__'):
print >> output, '%s%s:' % ((nested_level + 1) * spacing, k)
dum...
Convert a Python list with strings all to lowercase or uppercase
...s are lower-cased (or upper-cased in the second snippet), you would use:
>>> [x.lower() for x in ["A","B","C"]]
['a', 'b', 'c']
>>> [x.upper() for x in ["a","b","c"]]
['A', 'B', 'C']
You can also use the map function:
>>> map(lambda x:x.lower(),["A","B","C"])
['a', 'b...
How can I permanently enable line numbers in IntelliJ?
...
For the Mac new-schoolers, Android Studio > Preferences > Editor > Appearance > Show line numbers
– whyoz
May 21 '13 at 17:29
1
...
What is the standard way to add N seconds to datetime.time in Python?
...ittle thing, might add clarity to override the default value for seconds
>>> b = a + datetime.timedelta(seconds=3000)
>>> b
datetime.datetime(1, 1, 1, 12, 24, 59)
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