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The features of Python's help() function
Python's help() function accepts more than functions, modules, and objects. The help() function can lookup help for symbols, keywords, and topics!
But this also means we can't pass a string to help and expect to see help on the str type: Keywords are words that can't be used as valid Python variable names. If you type help from the help utility you can see the initial prompt again, which notes that modules, keywords, symbols, and topics are the top-level categories that you can use to discover what possible strings help will accept:
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