Why is main at the beginning of the output?

Question

Why is main at the beginning of the output?

I just started learning classes in Python and ran into this problem(or not) that when the result is output, the first line is:

<__main__.Restaurant object at 0x0042DE90>

I began to be interested in this, but I did not find an answer on the Internet, so I hope that experts will help. Here is the entire code to clarify the issue:

class Restaurant:

   def __init__(self, restaurant_name, cuisine_type):
       self.restaurant_name = restaurant_name
       self.cuisine_type = cuisine_type

   def describe_restaurant(self):
       print(self.restaurant_name)
       print(self.cuisine_type)

  def open_restaurant(self):
       print(self.restaurant_name+' is open!')


my_rest = Restaurant('Clot monet', 'classical')
print(my_rest)
my_rest.describe_restaurant()
my_rest.open_restaurant()

OUTPUT:

<__main__.Restaurant object at 0x0042DE90>
Clot monet
classical
Clot monet is open!

Process finished with exit code 0

1

python python-3.x python-3.6

Author: Arsen_Aganesov, 2019-01-25

Source

1 answers

score 0 · Accepted Answer

This is the standard repr representation of an object, inherited from object.

How to fix it-you can add your own repr description of the class instead of the standard one:

class Restaurant:
    def __init__(self, restaurant_name, cuisine_type):
        self.restaurant_name = restaurant_name
        self.cuisine_type = cuisine_type

    def describe_restaurant(self):
        print(self.restaurant_name)
        print(self.cuisine_type)

    def open_restaurant(self):
        print(self.restaurant_name+' is open!')

    def __repr__(self):
        return '{}(restaurant_name={!r}, cuisine_type={!r})'.format(self.__class__.__name__, self.restaurant_name, self.cuisine_type)


my_rest = Restaurant('Clot monet', 'classical')
print(my_rest)
my_rest.describe_restaurant()
my_rest.open_restaurant()

Output:

Restaurant(restaurant_name='Clot monet', cuisine_type='classical')
Clot monet
classical
Clot monet is open!