def __new__(cls, classname, bases, classdict):
# Ensure that '_sid_contains_cycles' and 'sid' are contained in sid_ignore.
# Otherwise sids of objects in reference cycles may depend on the order in which
# generate_sid is called upon these objects.
if 'sid_ignore' in classdict:
classdict['sid_ignore'] = set(
classdict['sid_ignore']) | {'_sid_contains_cycles', 'sid'}
c = UberMeta.__new__(cls, classname, bases, classdict)
c._implements_reduce = ('__reduce__' in classdict
or '__reduce_ex__' in classdict or any(
getattr(base, '_implements_reduce', False)
for base in bases))
# set __signature__ attribute on newly created class c to ensure that
# inspect.signature(c) returns the signature of its __init__ arguments and not
# the signature of ImmutableMeta.__call__
if config.PY3:
sig = inspect.signature(c.__init__)
c.__signature__ = sig.replace(
parameters=tuple(sig.parameters.values())[1:])
else:
try:
from IPython.utils.signatures import signature
sig = signature(c.__init__)
c.__signature__ = sig.replace(
parameters=tuple(sig.parameters.values())[1:])
except ImportError:
pass
return c
def _getdef(self,obj,oname=''):
"""Return the call signature for any callable object.
If any exception is generated, None is returned instead and the
exception is suppressed."""
try:
hdef = oname + str(signature(obj))
return cast_unicode(hdef)
except:
return None
def _getdef(self,obj,oname=''):
"""Return the call signature for any callable object.
If any exception is generated, None is returned instead and the
exception is suppressed."""
try:
hdef = oname + str(signature(obj))
return cast_unicode(hdef)
except:
return None
def _function_pprint(obj, p, cycle):
"""Base pprint for all functions and builtin functions."""
name = _safe_getattr(obj, '__qualname__', obj.__name__)
mod = obj.__module__
if mod and mod not in ('__builtin__', 'builtins', 'exceptions'):
name = mod + '.' + name
try:
func_def = name + str(signature(obj))
except ValueError:
func_def = name
p.text('<function %s>' % func_def)
def _function_pprint(obj, p, cycle):
"""Base pprint for all functions and builtin functions."""
name = _safe_getattr(obj, '__qualname__', obj.__name__)
mod = obj.__module__
if mod and mod not in ('__builtin__', 'builtins', 'exceptions'):
name = mod + '.' + name
try:
func_def = name + str(signature(obj))
except ValueError:
func_def = name
p.text('<function %s>' % func_def)
def __init__(self, view, f, block=None, **flags):
self.view = view
self.func = f
self.block=block
self.flags=flags
# copy function attributes for nicer inspection
# of decorated functions
self.__name__ = getname(f)
if getattr(f, '__doc__', None):
self.__doc__ = '{} wrapping:\n{}'.format(
self.__class__.__name__, f.__doc__,
)
if getattr(f, '__signature__', None):
self.__signature__ = f.__signature__
else:
try:
self.__signature__ = signature(f)
except Exception:
# no signature, but that's okay
pass
def __init__(self, view, f, block=None, **flags):
self.view = view
self.func = f
self.block = block
self.flags = flags
# copy function attributes for nicer inspection
# of decorated functions
self.__name__ = getname(f)
if getattr(f, '__doc__', None):
self.__doc__ = '{} wrapping:\n{}'.format(
self.__class__.__name__,
f.__doc__,
)
if getattr(f, '__signature__', None):
self.__signature__ = f.__signature__
else:
try:
self.__signature__ = signature(f)
except Exception:
# no signature, but that's okay
pass
