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“TypeError: (Integer) is not JSON serializable” when serializing JSON in Python?
I am trying to send a simple dictionary to a json file from python, but I keep getting the "TypeError: 1425 is not JSON serializable" message.
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Using property() on classmethods
... class foo(object):
... _var = 5
... class __metaclass__(type): # Python 2 syntax for metaclasses
... pass
... @classmethod
... def getvar(cls):
... return cls._var
... @classmethod
... def setvar(cls, value):
... cls._var = value
...
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Python group by
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I'm working on a MapReduce program in python, just wondering is there any way to group by values in a list without dealing with dictionaries or external library such as pandas? If not, then how can I get rid of items and type in my result?
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Private and protected constructor in Scala
...gramming Scala. Page 60 of Subramaniam's Programming Scala. I don't have a PDF of Beginning Scala with me right now to check it out.
– Daniel C. Sobral
Nov 13 '09 at 18:53
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Url decode UTF-8 in Python
I have spent plenty of time as far as I am newbie in Python.
How could I ever decode such a URL:
3 Answers
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Effective way to find any file's Encoding
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Thanks @Simon Mourier. I dint expect my pdf / any file would not have bom. This link stackoverflow.com/questions/4520184/… might be helpful for someone who try to detect without bom.
– Ram
Mar 16 '16 at 9:42
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.NET - Dictionary locking vs. ConcurrentDictionary
...Edit: .NET 4 ConcurrentDictionary and patterns.
Microsoft have released a pdf called Patterns of Paralell Programming. Its reallly worth downloading as it described in really nice details the right patterns to use for .Net 4 Concurrent extensions and the anti patterns to avoid. Here it is.
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How to replace (or strip) an extension from a filename in Python?
Is there a built-in function in Python that would replace (or remove, whatever) the extension of a filename (if it has one) ?
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How do I detect whether a Python variable is a function?
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If this is for Python 2.x or for Python 3.2+, you can also use callable(). It used to be deprecated, but is now undeprecated, so you can use it again. You can read the discussion here: http://bugs.python.org/issue10518. You can do this with...
What's the correct way to sort Python `import x` and `from x import y` statements?
The python style guide suggests to group imports like this:
6 Answers
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