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Execution of Python code with -m option or not
....bar as the starting point.
Demo:
$ mkdir -p test/foo/bar
$ touch test/foo/__init__.py
$ touch test/foo/bar/__init__.py
$ cat << EOF > test/foo/bar/baz.py
> if __name__ == "__main__":
> print __package__
> print __name__
>
> EOF
$ PYTHONPATH=test python test/foo/bar...
Is there a built-in function to print all the current properties and values of an object?
So what I'm looking for here is something like PHP's print_r function.
25 Answers
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How do I get the path and name of the file that is currently executing?
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user13993 did indeed nail it. Should be os.path.realpath(__file__)
– uchuugaka
Aug 13 '15 at 9:02
2
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What does the caret operator (^) in Python do?
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It invokes the __xor__() or __rxor__() method of the object as needed, which for integer types does a bitwise exclusive-or.
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improv...
How to enumerate an object's properties in Python?
... print(property, ":", value)
Be aware that in some rare cases there's a __slots__ property, such classes often have no __dict__.
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How do you generate dynamic (parameterized) unit tests in python?
...,
["bar", "a", "b"],
["lee", "b", "b"],
])
def test_sequence(self, name, a, b):
self.assertEqual(a,b)
Which will generate the tests:
test_sequence_0_foo (__main__.TestSequence) ... ok
test_sequence_1_bar (__main__.TestSequence) ... FAIL
test_sequence_2_lee (__main_...
Pandas selecting by label sometimes return Series, sometimes returns DataFrame
...using? On the latest version, I get a KeyError when I try .loc[[nonexistent_label]].
– Dan Allan
Nov 6 '14 at 16:58
2
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Can't pickle when using multiprocessing Pool.map()
...r program to allow such methods to be pickled, registering it with the copy_reg standard library method.
For example, Steven Bethard's contribution to this thread (towards the end of the thread) shows one perfectly workable approach to allow method pickling/unpickling via copy_reg.
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How do I get the number of elements in a list?
...objects with a "size" in Python, in particular, have an attribute called ob_size, where the number of elements in the object is cached. So checking the number of objects in a list is very fast.
But if you're checking if list size is zero or not, don't use len - instead, put the list in a boolean co...
How to load all modules in a folder?
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List all python (.py) files in the current folder and put them as __all__ variable in __init__.py
from os.path import dirname, basename, isfile, join
import glob
modules = glob.glob(join(dirname(__file__), "*.py"))
__all__ = [ basename(f)[:-3] for f in modules if isfile(f) and not f.endswi...