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Check if a given key already exists in a dictionary

... Reference for this answer is at the python docs – enkash Jan 28 '15 at 5:54 36 ...
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How to iterate over rows in a DataFrame in Pandas

...apply(): i)  Reductions that can be performed in Cython, ii) Iteration in Python space DataFrame.itertuples() and iteritems() DataFrame.iterrows() iterrows and itertuples (both receiving many votes in answers to this question) should be used in very rare circumstances, such as generating row objec...
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Why does range(start, end) not include end?

...s you passed on your journey'. I hope some of that helps in explaining to Pythonitos/Pythonitas! share | improve this answer | follow | ...
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django test app error - Got an error creating the test database: permission denied to create databas

...RIVILEGES ON myproject_test.* TO 'chandan'@'localhost'; Now you can run python manage.py test polls. share | improve this answer | follow | ...
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NameError: name 'self' is not defined

...k fine), the above actually works as a workaround. It's still awkward that python chose to make self unavailable in a parameter list. – shevy Jan 2 '18 at 11:30 2 ...
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Making heatmap from pandas DataFrame

I have a dataframe generated from Python's Pandas package. How can I generate heatmap using DataFrame from pandas package. ...
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How to overcome “datetime.datetime not JSON serializable”?

...elds were represented as: {"$date": 1506816000000} If you want a generic Python solution for serializing datetime to json, check out @jjmontes' answer for a quick solution which requires no dependencies. As you are using mongoengine (per comments) and pymongo is a dependency, pymongo has built-...
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How do I check if there are duplicates in a flat list?

...en check its length. Its advantage is that it's letting the C code inside Python do the heavy lifting. Your solution loops in Python code, but has the advantage of short-circuiting when a single match has been found. If the odds are that the list probably has no duplicates, I like Denis Otkidach'...
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How can you program if you're blind?

...or about 13 years on Windows, Mac, Linux and DOS, in languages from C/C++, Python, Java, C# and various smaller languages along the way. Though the original question was around configuring the environment, I think it's best answered by looking at how a blind person would use a computer. Some people...
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How to work with complex numbers in C?

... FYI, since the OP mentions Python bindings, when working with Python I try to stick to C89 (since the rest of Python's code is C89, and if you want your extension to run on Windows, it's usually compiled with MVSC, which is limited to C89). I don't kno...