def get_default_args_dict(function):
'''
Get ordered dict from arguments which have a default to their default.
Example:
>>> def f(a, b, c=1, d='meow'): pass
>>> get_default_args_dict(f)
OrderedDict([('c', 1), ('d', 'meow')])
'''
arg_spec = cute_inspect.getargspec(function)
(s_args, s_star_args, s_star_kwargs, s_defaults) = arg_spec
# `getargspec` has a weird policy, when inspecting a function with no
# defaults, to give a `defaults` of `None` instead of the more consistent
# `()`. We fix that here:
if s_defaults is None:
s_defaults = ()
# The number of args which have default values:
n_defaultful_args = len(s_defaults)
defaultful_args = s_args[-n_defaultful_args:] if n_defaultful_args \
else []
return OrderedDict(zip(defaultful_args, s_defaults))
def get_default_args_dict(function):
'''
Get ordered dict from arguments which have a default to their default.
Example:
>>> def f(a, b, c=1, d='meow'): pass
>>> get_default_args_dict(f)
OrderedDict([('c', 1), ('d', 'meow')])
'''
arg_spec = cute_inspect.getargspec(function)
(s_args, s_star_args, s_star_kwargs, s_defaults) = arg_spec
# `getargspec` has a weird policy, when inspecting a function with no
# defaults, to give a `defaults` of `None` instead of the more consistent
# `()`. We fix that here:
if s_defaults is None:
s_defaults = ()
# The number of args which have default values:
n_defaultful_args = len(s_defaults)
defaultful_args = s_args[-n_defaultful_args:] if n_defaultful_args \
else []
return OrderedDict(zip(defaultful_args, s_defaults))
def __init__(self, containing_dict, function, *args, **kwargs):
'''
Construct the `SleekCallArgs`.
`containing_dict` is the `dict` we'll try to remove ourselves from when
one of our sleekrefs dies. `function` is the function for which we
calculate call args from `*args` and `**kwargs`.
'''
self.containing_dict = containing_dict
'''
`dict` we'll try to remove ourselves from when 1 of our sleekrefs dies.
'''
args_spec = cute_inspect.getargspec(function)
star_args_name, star_kwargs_name = \
args_spec.varargs, args_spec.keywords
call_args = cute_inspect.getcallargs(function, *args, **kwargs)
del args, kwargs
self.star_args_refs = []
'''Sleekrefs to star-args.'''
if star_args_name:
star_args = call_args.pop(star_args_name, None)
if star_args:
self.star_args_refs = [SleekRef(star_arg, self.destroy) for
star_arg in star_args]
self.star_kwargs_refs = {}
'''Sleerefs to star-kwargs.'''
if star_kwargs_name:
star_kwargs = call_args.pop(star_kwargs_name, {})
if star_kwargs:
self.star_kwargs_refs = CuteSleekValueDict(self.destroy,
star_kwargs)
self.args_refs = CuteSleekValueDict(self.destroy, call_args)
'''Mapping from argument name to value, sleek-style.'''
# In the future the `.args`, `.star_args` and `.star_kwargs` attributes
# may change, so we must record the hash now:
self._hash = cheat_hashing.cheat_hash(
(
self.args,
self.star_args,
self.star_kwargs
)
)
def __init__(self, containing_dict, function, *args, **kwargs):
'''
Construct the `SleekCallArgs`.
`containing_dict` is the `dict` we'll try to remove ourselves from when
one of our sleekrefs dies. `function` is the function for which we
calculate call args from `*args` and `**kwargs`.
'''
self.containing_dict = containing_dict
'''
`dict` we'll try to remove ourselves from when 1 of our sleekrefs dies.
'''
args_spec = cute_inspect.getargspec(function)
star_args_name, star_kwargs_name = \
args_spec.varargs, args_spec.keywords
call_args = cute_inspect.getcallargs(function, *args, **kwargs)
del args, kwargs
self.star_args_refs = []
'''Sleekrefs to star-args.'''
if star_args_name:
star_args = call_args.pop(star_args_name, None)
if star_args:
self.star_args_refs = [
SleekRef(star_arg, self.destroy) for star_arg in star_args
]
self.star_kwargs_refs = {}
'''Sleerefs to star-kwargs.'''
if star_kwargs_name:
star_kwargs = call_args.pop(star_kwargs_name, {})
if star_kwargs:
self.star_kwargs_refs = CuteSleekValueDict(
self.destroy, star_kwargs)
self.args_refs = CuteSleekValueDict(self.destroy, call_args)
'''Mapping from argument name to value, sleek-style.'''
# In the future the `.args`, `.star_args` and `.star_kwargs` attributes
# may change, so we must record the hash now:
self._hash = cheat_hashing.cheat_hash(
(self.args, self.star_args, self.star_kwargs))
def assert_same_signature(*callables):
'''Assert that all the `callables` have the same function signature.'''
arg_specs = [cute_inspect.getargspec(callable_) for callable_ in callables]
if not logic_tools.all_equivalent(arg_specs, assume_transitive=False):
raise Failure('Not all the callables have the same signature.')
def assert_same_signature(*callables):
'''Assert that all the `callables` have the same function signature.'''
arg_specs = [cute_inspect.getargspec(callable_) for callable_ in callables]
if not logic_tools.all_equivalent(arg_specs, assume_transitive=False):
raise Failure('Not all the callables have the same signature.')