Why/how is it possible to add variables like this? I don't understand
this mechanism:
http://docs.python.org/tut/node11.html#SECTION0011330000000000000000
class Employee:
pass
john = Employee() # Create an empty employee record
# Fill the fields of the record
john.name = 'John Doe'
john.dept = 'computer lab'
john.salary = 1000
---------------------------------------------------------------------------
Also, I can't get multiple inheritance to work.
Don't mind that the a vegan obviously don't inherit from an animal and
a vegetable. I didn't come up with anything better, it is just to
learn about inheritance.
class Animal(object):
def __init__(self, name, weight):
self.name = name
self.weight = weight
def speak(self):
print "speak"
class Vegetable(object):
def __init__(self, name, volume):
self.name = name
self.volume = volume
def split(self):
print "tjoff"
class Vegan(Animal, Vegetable):
#pass
def __init__(self, name, attacks):
self.name = name
self.attacks = attacks
>>>
Traceback (most recent call last):
File "C:/Python25/Progs/XXXX/Movie.py", line 42, in <module>
class ActionComedy(Movie, ActionMovie):
TypeError: Error when calling the metaclass bases
Cannot create a consistent method resolution
order (MRO) for bases Movie, ActionMovie
>>>
also, when inheriting, can I inherit __init__() somehow? If I want the
same attributes but perhaps some additional methods for example.
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