How to change class attributes using a method?

Question

I have a Django model class who has some default attributes, and I want to change the value of the complete variable by calling a function:

class Foo:
 complete = False
 def set_complete_true():
 complete = True

But after calling set_complete_true() the complete variable is still False.

• sshashank124: Make set_complete_true an instance method and do self.complete = True instead

Answer 1

An instance function (most functions are instance functions) has a special parameter that is always the first one called self. It is a reference to the object with which you call the function. For example, if you call some_instance.foo(), then foo is called with as self the some_instance.

You thus need to add the self parameter, and set the self.complete to True:

class Foo:
 complete = False
 def set_complete_true(self):
 self.complete = True

Answer 2

I believe this is worth a shot:

class Foo:
 complete = False
 def set_complete_true(self):
 self.complete = True
a = Foo()
a.set_complete_true()
print(a.complete) # should be True now