python.py 文件源码

def getfuncargnames(function, startindex=None):
    # XXX merge with main.py's varnames
    #assert not inspect.isclass(function)
    realfunction = function
    while hasattr(realfunction, "__wrapped__"):
        realfunction = realfunction.__wrapped__
    if startindex is None:
        startindex = inspect.ismethod(function) and 1 or 0
    if realfunction != function:
        startindex += num_mock_patch_args(function)
        function = realfunction
    if isinstance(function, functools.partial):
        argnames = inspect.getargs(py.code.getrawcode(function.func))[0]
        partial = function
        argnames = argnames[len(partial.args):]
        if partial.keywords:
            for kw in partial.keywords:
                argnames.remove(kw)
    else:
        argnames = inspect.getargs(py.code.getrawcode(function))[0]
    defaults = getattr(function, 'func_defaults',
                       getattr(function, '__defaults__', None)) or ()
    numdefaults = len(defaults)
    if numdefaults:
        return tuple(argnames[startindex:-numdefaults])
    return tuple(argnames[startindex:])

# algorithm for sorting on a per-parametrized resource setup basis
# it is called for scopenum==0 (session) first and performs sorting
# down to the lower scopes such as to minimize number of "high scope"
# setups and teardowns