OOP hellp (simple class person)

OOP hellp (simple class person) - Printable Version

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OOP hellp (simple class person) - onit - Jul-14-2020

Hello friends, I have started to learn OOP in python and I want some help with the simple class. I am trying to create a simple "person" class and return the birth year of the person. so I am pasting in my atemmt and the error I am geting below.

class Person:

	def __init_(self, name, age):
		self.name = name
		self.age = age 
		self.year = 2020

	def get_birth_year(self, name, age):
		print("hello" + " " + self.name)
		print("you are bourn")
		result = self.year - self.age
		print(result)


print("enter your name")
name = input()
print("enter your age")
age = input()
p1 = Person()
print(p1.get_birth_year(name,age))

Error:Traceback (most recent call last):
  File "person.py", line 20, in <module>
    print(p1.get_birth_year(name,age))
  File "person.py", line 9, in get_birth_year
    print("hello" + " " + self.name)
AttributeError: 'Person' object has no attribute 'name'

Thanks for help it mite be something stupid or incorrect logick, but I am trying to learn OOP in python and replicate what i learned in java 5 years ago.

RE: OOP hellp (simple class person) - stullis - Jul-14-2020

Two problems:

There's a typo in the __init__() function signature. You have __init_ instead of __init__. Missing a trailing underscore.
When you instantiate p1, you'll need two arguments for Person().

RE: OOP hellp (simple class person) - menator01 - Jul-14-2020

I recommend that you check into python3's f-string.
That would turn this print("hello" + " " + self.name) into this print(f"hello {self.name}")

RE: OOP hellp (simple class person) - Yoriz - Jul-14-2020

Also def get_birth_year(self, name, age): should not have parameters name & age, and it should return result instead of printing it

RE: OOP hellp (simple class person) - onit - Jul-14-2020

(Jul-14-2020, 03:28 PM)stullis Wrote: Two problems:

There's a typo in the __init__() function signature. You have __init_ instead of __init__. Missing a trailing underscore.

When you instantiate p1, you'll need two arguments for Person().

Thanks i will look in to this. Yep spelling mistakes hapins for me more often then i want them, using a screenreader when you are coding has some cons and that one is for sure...