/usr/lib/python2.7/dist-packages/openpyxl/descriptors/slots.py is in python-openpyxl 2.4.9-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 | # Metaclass for mixing slots and descriptors
# From "Programming in Python 3" by Mark Summerfield Ch.8 p. 383
class AutoSlotProperties(type):
def __new__(mcl, classname, bases, dictionary):
slots = list(dictionary.get("__slots__", []))
for getter_name in [key for key in dictionary if key.startswith("get_")]:
name = getter_name
slots.append("__" + name)
getter = dictionary.pop(getter_name)
setter = dictionary.get(setter_name, None)
if (setter is not None
and isinstance(setter, collections.Callable)):
del dictionary[setter_name]
dictionary[name] = property(getter. setter)
dictionary["__slots__"] = tuple(slots)
return super().__new__(mcl, classname, bases, dictionary)
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