Finish implementing the inner function getproperty so that we can use bitprop
class __bitproperties__(type):
def __new__(meta, classname, bases, classDict):
for name in classDict['bit_properties']:
def getproperty(enum):
# Change the code here
return property(lambda self: None,
lambda self, value: None)
enum = eval(name.upper())
classDict[name] = getproperty(enum)
return type.__new__(meta, classname, bases, classDict)
ENABLED, SIMPLE, SUNKEN, RAISED, TRANSPARENT = 1, 2, 4, 8, 16
class Widget(object):
__metaclass__ = __bitproperties__
style = 0
bit_properties = ['enabled', 'simple', 'sunken', 'raised', 'transparent']
w = Widget()
w.enabled = True
print w.style # 1
w.sunken = True
print w.style # 5
w.transparent = True
print w.style # 21
w.sunken = False
print w.style # 17
Expected output:
1 5 21 17
Hints:
Solution: bitfield1.py