How to create a constructor that takes multiple arguments?

Question

I have a certain class and i'm having difficulty setting up the__init__ constructor. I need it to take in zero or more strings as arguments, each giving a city name and state abbreviation, and indicating a destination along a tour of US cities.

For example:

Tour("New York, NY", "Lansing, MI", "Los Angeles, CA")

represents a tour that starts in New York city, proceeds to Lansing, and ends in Los Angeles.

Any ideas how to go about doing this using python 3.3?

score 2 · Answer 1 · answered Apr 14 '13 at 21:59

2

Like this:

class Tour:
    def __init__(self, *cities):
        # cities is a tuple of arguments, do what you want with it

When you call

Tour("New York, NY", "Lansing, MI", "Los Angeles, CA")

cities in __init__ will be set to ("New York, NY", "Lansing, MI", "Los Angeles, CA").

answered Apr 14 '13 at 21:59

Pavel Anossov

60,842
14
151
124

This will do, you then access `cities` like any tuple: `cities[0]`... etc. – pcalcao Apr 14 '13 at 22:00
how can i create cities into a tuple of arguments though? – Tyler Apr 14 '13 at 22:02

score 1 · Answer 2 · answered Apr 15 '13 at 08:57

1

This may help...

Example

class Bar:
   def __init__ (self, arg1=None, arg2=None, ... argN=None):

class NEW (Bar):    
    def __init__ (self, my_new_arg=None, ??? )
       self.new_arg = my_new_arg
       Bar.__init__(self, ??? )

answered Apr 15 '13 at 08:57

Dharmjeet Kumar

533
7
23

How to create a constructor that takes multiple arguments?

2 Answers2