Python constructors with default values? -


so, assignment create ship class has attributes 'name' , 'fuel.' name should have default value of "enterprise" , fuel should have default of 0. , have create object no parameters, each single parameter, , both. 1 that's not working 1 fuel , i'm not sure why.

here's code:

class ship(object):      def __init__(self, name = "enterprise", fuel = 0):         self.name = name         self.fuel = fuel      def status(self):         if self.fuel < 0:             self.fuel = 0         print self.name, "\nfuel:", self.fuel, "\n"  #main  ship1 = ship() ship1.status() ship2 = ship("space ship1") ship2.status() ship3 = ship(10) ship3.status() ship4 = ship("space ship2", 10) ship4.status()

and here's it's outputting:

enterprise  fuel: 0   space ship1  fuel: 0   10  fuel: 0   space ship2  fuel: 10

the third 1 printing fuel name , defaulting fuel 0 isn't right. how can fix it?

in ship3 = ship(10) first parameter 10 name of ship.

you might want use ship3 = ship(fuel=10).

not directly related, important nevertheless. remember if use mutable objects default arguments (which don't in example), evaluated once , not each call.


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