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        isroutine() - check object types
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    getdoc(), getcomments() - get documentation on an object
    getmodule() - determine the module that an object came from
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    getargvalues(), getcallargs() - get info about function arguments
    getfullargspec() - same, with support for Python 3 features
    formatargvalues() - format an argument spec
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    currentframe() - get the current stack frame
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