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+--- Thread: Unexpected Output using classes and inheritance (/thread-19555.html)
Unexpected Output using classes and inheritance - langley - Jul-04-2019
I am a beginner at python and in the code below I get an error saying attribute was not defined or saying a list is not callable if I make a few changes. Please help me through this.
class User():
"""Storing information about any user"""
def __init__(self,first_name,last_name,age,location,gender):
"""Holds the information"""
self.first_name=first_name
self.last_name=last_name
self.age=age
self.location=location
def describe_user(self):
print(self.first_name.title() + " " + self.last_name.title() + " " +"aged " + str(self.age) +" " + "lives in " + self.location.title())
class Admin(User):
def __init__(self,first_name,last_name,age,location,gender):
super(). __init__(first_name,last_name,age,location,gender)
self.privileges=[]
def privileges(self):
self.privileges=[]
self.privileges.append("can ban post")
self.privileges.append("can revoke access")
self.privileges.append("can ban user")
print("The privileges of an admin are:")
for privilege in self.privileges:
print("\n\t" + privilege)
new_user=Admin('abc','bac', 48, 'vienna' , 'male')
new_user.describe_user()
new_user.privileges()
RE: Unexpected Output using classes and inheritance - scidam - Jul-04-2019
The
priveleges function is defined inside the __init__ function. So, you are trying to invoke a list: new_user.privileges is a list (see line No. 14). I make some changes in your code, I suppose they help:class User():
"""Storing information about any user"""
def __init__(self, first_name, last_name, age, location, gender):
"""Holds the information"""
self.first_name = first_name
self.last_name = last_name
self.age = age
self.location = location
def __str__(self):
return " ".join([self.first_name.title(), self.last_name.title(),
"aged", str(self.age), "lives in", self.location.title()])
class Admin(User):
def __init__(self,first_name, last_name, age, location, gender):
super().__init__(first_name,last_name,age,location,gender)
self.privileges = []
def set_privileges(self):
self.privileges = []
self.privileges.append("can ban post")
self.privileges.append("can revoke access")
self.privileges.append("can ban user")
print("The privileges of an admin are:")
for privilege in self.privileges:
print("\n\t" + privilege)
new_user = Admin('abc','bac', 48, 'vienna' , 'male')
print(new_user)
new_user.set_privileges()
new_user.privileges
RE: Unexpected Output using classes and inheritance - langley - Jul-04-2019
Oops. I noticed that. Indentation is key. Thanks a lot. Works perfectly now.