# The inspect.formatargspec() function was dropped in Python 3.11 but we need
# need it for when constructing signature changing decorators based on result of
# inspect.getargspec() or inspect.getfullargspec(). The code here implements
# inspect.formatargspec() base on Parameter and Signature from inspect module,
# which were added in Python 3.6. Thanks to Cyril Jouve for the implementation.
try:
from inspect import Parameter, Signature
except ImportError:
from inspect import formatargspec
else:
def formatargspec(args, varargs=None, varkw=None, defaults=None,
kwonlyargs=(), kwonlydefaults={}, annotations={}):
if kwonlydefaults is None:
kwonlydefaults = {}
ndefaults = len(defaults) if defaults else 0
parameters = [
Parameter(
arg,
Parameter.POSITIONAL_OR_KEYWORD,
default=defaults[i] if i >= 0 else Parameter.empty,
annotation=annotations.get(arg, Parameter.empty),
) for i, arg in enumerate(args, ndefaults - len(args))
]
if varargs:
parameters.append(Parameter(varargs, Parameter.VAR_POSITIONAL))
parameters.extend(
Parameter(
kwonlyarg,
Parameter.KEYWORD_ONLY,
default=kwonlydefaults.get(kwonlyarg, Parameter.empty),
annotation=annotations.get(kwonlyarg, Parameter.empty),
) for kwonlyarg in kwonlyargs
)
if varkw:
parameters.append(Parameter(varkw, Parameter.VAR_KEYWORD))
return_annotation = annotations.get('return', Signature.empty)
return str(Signature(parameters, return_annotation=return_annotation)) |