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string sanitizer for filename

...a whitelist of characters you are happy to be used? For example, you could allow just good ol' a-z, 0-9, _, and a single instance of a period (.). That's obviously more limiting than most filesystems, but should keep you safe. ...
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How do you write tests for the argparse portion of a python module? [closed]

...turn parser.parse_args(args) Then in your main function you should just call it with: parser = parse_args(sys.argv[1:]) (where the first element of sys.argv that represents the script name is removed to not send it as an additional switch during CLI operation.) In your tests, you can then call...
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How can I add reflection to a C++ application?

...rate the data about each field(plus the field itself). This macro will be called like this: REFLECTABLE ( (const char *) name, (int) age ) So using Boost.PP we iterate over each argument and generate the data like this: // A helper metafunction for adding const to a type template<clas...
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Best way to use PHP to encrypt and decrypt passwords? [duplicate]

...ing. You should not rely on unauthenticated encryption for security, especially since the code as provided is vulnerable to padding oracle attacks. See also: https://stackoverflow.com/a/30189841/2224584 https://stackoverflow.com/a/30166085/2224584 https://stackoverflow.com/a/30159120/2224584 Al...
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Complete Working Sample of the Gmail Three-Fragment Animation Scenario?

...at I'll refer to as "the Gmail three-fragment animation" scenario. Specifically, we want to start with two fragments, like this: ...
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How to use the pass statement?

... I really don't think this properly answers the question. Citing one possible use for something, even if it is the most common use for it, is not the same as explaining what it is for. – Schilcote ...
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One-liner to check whether an iterator yields at least one element?

... Similarly if you need to check if the iterator is empty, one could use all(False for _ in iterator) will check if the iterator is empty. (all returns True if the iterator is empty, otherwise it stops when it sees the first False element) – KGardevoir Apr 3 ...
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What is the difference between join and merge in Pandas?

... pandas.merge() is the underlying function used for all merge/join behavior. DataFrames provide the pandas.DataFrame.merge() and pandas.DataFrame.join() methods as a convenient way to access the capabilities of pandas.merge(). For example, df1.merge(right=df2, ...) is equiva...
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Django: How to completely uninstall a Django app?

What is the procedure for completely uninstalling a Django app, complete with database removal? 5 Answers ...
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Log exception with traceback

... log file ERROR:root:Got exception on main handler Traceback (most recent call last): File "/tmp/teste.py", line 9, in <module> run_my_stuff() NameError: name 'run_my_stuff' is not defined share | ...