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python's re: return True if string contains regex pattern
...z) and want to know which is a more efficient way to do this, should I use python's 'xyz' in given_text or use re.compile(r'xyz').search(given_text) ?
– bawejakunal
May 4 '16 at 9:01
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The tilde operator in Python
What's the usage of the tilde operator in Python?
7 Answers
7
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Why is '+' not understood by Python sets?
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Python sets don't have an implementation for the + operator.
You can use | for set union and & for set intersection.
Sets do implement - as set difference. You can also use ^ for symmetric set difference (i.e., it will ...
How to toggle a value in Python
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>>> toggle()
'green'
>>> toggle()
'blue'
Note that in Python 3 the next() method was changed to __next__(), so the first line would be now written as toggle = itertools.cycle(['red', 'green', 'blue']).__next__
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How do I use CMake?
...ou can use, for example, Visual Studio to compile. By default (at least on linux), it makes a project that uses Make instead. Make is used to actually build the project, not configure or set it up. So first you'd have to use CMake to set up the project, then run Make to compile and build stuff.
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How can I create an object and add attributes to it?
I want to create a dynamic object (inside another object) in Python and then add attributes to it.
16 Answers
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Limiting floats to two decimal points
...ar floats have 24 bits (8 digits) of precision. The floating point type in Python uses double precision to store the values.
For example,
>>> 125650429603636838/(2**53)
13.949999999999999
>>> 234042163/(2**24)
13.949999988079071
>>> a = 13.946
>>> print(a)
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How do I get python's pprint to return a string instead of printing?
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}
);
Post as a guest
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Equivalent C++ to Python generator pattern
I've got some example Python code that I need to mimic in C++. I do not require any specific solution (such as co-routine based yield solutions, although they would be acceptable answers as well), I simply need to reproduce the semantics in some manner.
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Defining private module functions in python
According to http://www.faqs.org/docs/diveintopython/fileinfo_private.html :
9 Answers
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