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Why is it better to use my dict keys over iterating directly over the dictionary Iteration over a dictionary is clearly documented as yielding keys It appears you had Python 2 in mind when

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How do I declare custom exception classes in modern Python My primary goal is to follow whatever standard other exception classes have so that for instance any extra string I include in the exc

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I want to find out my Python installation path on Windows For example C Python25 How can I find where Python is installed

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How do I add a new key to an existing dictionary It doesn t have an add method

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In Python 3 generator is the default behavior Not sure if returning a list is still mandatory or a generator would do as well but passing a generator to the list constructor will create a list out

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Working on a python assignment and was curious as to what 1 means in the context of the following code instructions f readline 1 Have searched on here on S O and on Google

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12 Extracting extension from filename in Python Python os module splitext splitext function splits the file path into a tuple having two values root and extension

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How do I determine the current directory where I was in the shell when I ran the Python script and where the Python file I am executing is

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When I type python into the command line the command prompt says python is not recognized as an internal or external command operable program or batch file What should I do Note I have Python