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Redirect stdout to a file in Python?

... @mgold or you can use sys.stdout = sys.__stdout__ to get it back. – clemtoy Jul 9 '15 at 12:52  |  show 9 ...
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Python Sets vs Lists

... as lists, except for their immutability. Iterating >>> def iter_test(iterable): ... for i in iterable: ... pass ... >>> from timeit import timeit >>> timeit( ... "iter_test(iterable)", ... setup="from __main__ import iter_test; iterable = set(range(1...
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How to parse/read a YAML file into a Python object? [duplicate]

...e looks like this: import yaml with open('tree.yaml') as f: # use safe_load instead load dataMap = yaml.safe_load(f) The variable dataMap now contains a dictionary with the tree data. If you print dataMap using PrettyPrint, you will get something like: {'treeroot': {'branch1': {'branch1-...
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Where in a virtualenv does the custom code go?

...our packages right inside: /foobar /bin {activate, activate.py, easy_install, python} /include {python2.6/...} /lib {python2.6/...} /mypackage1 __init__.py /mypackage2 __init__.py The advantage of this approach is that you can always be sure to find find the activate...
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Regular expression for letters, numbers and - _

...he pattern you want is something like (see it on rubular.com): ^[a-zA-Z0-9_.-]*$ Explanation: ^ is the beginning of the line anchor $ is the end of the line anchor [...] is a character class definition * is "zero-or-more" repetition Note that the literal dash - is the last character in the ch...
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Elegant ways to support equivalence (“equality”) in Python classes

... and != operators. In Python, this is made possible by implementing the __eq__ and __ne__ special methods, respectively. The easiest way I've found to do this is the following method: ...
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How can I get dictionary key as variable directly in Python (not by searching from value)?

...f you want to print key and value, use the following: for key, value in my_dict.iteritems(): print key, value share | improve this answer | follow | ...
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Getting list of parameter names inside python function [duplicate]

.... >>> func = lambda x, y: (x, y) >>> >>> func.__code__.co_argcount 2 >>> func.__code__.co_varnames ('x', 'y') >>> >>> def func2(x,y=3): ... print(func2.__code__.co_varnames) ... pass # Other things ... >>> func2(3,3) ('x', 'y') >...
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What is a Python equivalent of PHP's var_dump()? [duplicate]

When debugging in PHP, I frequently find it useful to simply stick a var_dump() in my code to show me what a variable is, what its value is, and the same for anything that it contains. ...
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Are nested try/except blocks in python a good programming practice?

...EAFP. Personally, I prefer to avoid nesting when it's not necessary: def __getattribute__(self, item): try: return object.__getattribute__(item) except AttributeError: pass # fallback to dict try: return self.dict[item] except KeyError: raise Attrib...