def lookup_by_type(self, typ):
"""Look up the registered formatter for a type.
Parameters
----------
typ : type or '__module__.__name__' string for a type
Returns
-------
f : callable
The registered formatting callable for the type.
Raises
------
KeyError if the type has not been registered.
"""
if isinstance(typ, string_types):
typ_key = tuple(typ.rsplit('.', 1))
if typ_key not in self.deferred_printers:
# We may have it cached in the type map. We will have to
# iterate over all of the types to check.
for cls in self.type_printers:
if _mod_name_key(cls) == typ_key:
return self.type_printers[cls]
else:
return self.deferred_printers[typ_key]
else:
for cls in pretty._get_mro(typ):
if cls in self.type_printers or self._in_deferred_types(cls):
return self.type_printers[cls]
# If we have reached here, the lookup failed.
raise KeyError("No registered printer for {0!r}".format(typ))
def __call__(self, obj):
"""Compute the format for an object."""
if self.enabled:
obj_id = id(obj)
try:
obj_class = getattr(obj, '__class__', None) or type(obj)
# First try to find registered singleton printers for the type.
try:
printer = self.singleton_printers[obj_id]
except (TypeError, KeyError):
pass
else:
return printer(obj)
# Next look for type_printers.
for cls in pretty._get_mro(obj_class):
if cls in self.type_printers:
return self.type_printers[cls](obj)
else:
printer = self._in_deferred_types(cls)
if printer is not None:
return printer(obj)
# Finally look for special method names.
if hasattr(obj_class, self.print_method):
printer = getattr(obj_class, self.print_method)
return printer(obj)
return None
except Exception:
pass
else:
return None
def lookup_by_type(self, typ):
"""Look up the registered formatter for a type.
Parameters
----------
typ : type or '__module__.__name__' string for a type
Returns
-------
f : callable
The registered formatting callable for the type.
Raises
------
KeyError if the type has not been registered.
"""
if isinstance(typ, str):
typ_key = tuple(typ.rsplit('.',1))
if typ_key not in self.deferred_printers:
# We may have it cached in the type map. We will have to
# iterate over all of the types to check.
for cls in self.type_printers:
if _mod_name_key(cls) == typ_key:
return self.type_printers[cls]
else:
return self.deferred_printers[typ_key]
else:
for cls in pretty._get_mro(typ):
if cls in self.type_printers or self._in_deferred_types(cls):
return self.type_printers[cls]
# If we have reached here, the lookup failed.
raise KeyError("No registered printer for {0!r}".format(typ))
def __call__(self, obj):
"""Compute the format for an object."""
if self.enabled:
obj_id = id(obj)
try:
obj_class = getattr(obj, '__class__', None) or type(obj)
# First try to find registered singleton printers for the type.
try:
printer = self.singleton_printers[obj_id]
except (TypeError, KeyError):
pass
else:
return printer(obj)
# Next look for type_printers.
for cls in pretty._get_mro(obj_class):
if cls in self.type_printers:
return self.type_printers[cls](obj)
else:
printer = self._in_deferred_types(cls)
if printer is not None:
return printer(obj)
# Finally look for special method names.
if hasattr(obj_class, self.print_method):
printer = getattr(obj_class, self.print_method)
return printer(obj)
return None
except Exception:
pass
else:
return None
