blob: 2b776a6e24a09b090536032dd77b6234ac19bb00 (
plain)
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try:
import funcsigs as inspect
except ImportError:
import inspect
from future.utils import iteritems
KEYWORD_KINDS = {inspect.Parameter.POSITIONAL_OR_KEYWORD,
inspect.Parameter.KEYWORD_ONLY}
class FromDict(object):
@classmethod
def from_dict(cls, dict):
if dict is None:
return cls()
params = inspect.signature(cls.__init__).parameters
if any(p.kind == inspect.Parameter.VAR_KEYWORD for p in
params.values()):
return cls(**dict)
param_names = set()
for i, (name, param) in enumerate(iteritems(params)):
if i == 0 and name == "self":
continue
if param.kind in KEYWORD_KINDS:
param_names.add(name)
filtered_dict = {k: v for k, v in iteritems(dict) if k in param_names}
return cls(**filtered_dict)
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