Function getargs

Lib/inspect.py:1204–1228

Get information about the arguments accepted by a code object. Three things are returned: (args, varargs, varkw), where 'args' is the list of argument names. Keyword-only arguments are appended. 'varargs' and 'varkw' are the names of the * and ** arguments or None.

(co)

Arguments = namedtuple('Arguments', 'args, varargs, varkw')

def getargs(co):
    """Get information about the arguments accepted by a code object.

    Three things are returned: (args, varargs, varkw), where
    'args' is the list of argument names. Keyword-only arguments are
    appended. 'varargs' and 'varkw' are the names of the * and **
    arguments or None."""
    if not iscode(co):
        raise TypeError('{!r} is not a code object'.format(co))

    names = co.co_varnames
    nargs = co.co_argcount
    nkwargs = co.co_kwonlyargcount
    args = list(names[:nargs])
    kwonlyargs = list(names[nargs:nargs+nkwargs])

    nargs += nkwargs
    varargs = None
    if co.co_flags & CO_VARARGS:
        varargs = co.co_varnames[nargs]
        nargs = nargs + 1
    varkw = None
    if co.co_flags & CO_VARKEYWORDS:
        varkw = co.co_varnames[nargs]
    return Arguments(args + kwonlyargs, varargs, varkw)


FullArgSpec = namedtuple('FullArgSpec',