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Python Object-Oriented Python (retired) Hack-n-Slash Warriors! Come Out and Play-ay!

Posted by MUZ140515 Herbert Chirwa
MUZ140515 Herbert Chirwa
2,589 Points

am totally confused with stage four, went over the tutorial but l still don't get whats required of the last challenge

can you explain what the last challenge requires

warrior.py 
from character import Character 

class Warrior(Character):
    weapon = "sword"

    def rage(self):
      self.attack_limit = 20

    def some_method(self):
        return self.a_value

    def print(self):
      string = "{}, <{}>, <{}>".format(string, weapon, rage())
      return string

1 Answer

Andrei Fecioru
Andrei Fecioru
15,059 Points
Andrei Fecioru
Andrei Fecioru
15,059 Points

The challenge requires you to implement in you Warrior class one of those "special" methods that start with a double underscore. In this particular case, we are talking about the __str__ method which provides an automatic string representation for your class. This method will be invoked automatically whenever such a representation is required by the usage context of your objects (example: passing a Warrior object as an argument to the print function). As far as I remember this technique is mentioned in the course.

One variation of the code that passes the challenge would be:

from character import Character 

class Warrior(Character):
    weapon = "sword"

    def rage(self):
      self.attack_limit = 20

    def __str__(self):
      return "Warrior, {}, {}".format(self.weapon, self.attack_limit)

With this code in place, if you pass an instance of the Warrior class to the print function, the __str__ method will be automatically invoked on that object and the string returned by that method invocation would be used and printed out at the console. 

w = Warrior()

# this will print out: Warrior, sword, 20"
print(w)

It is good practice to implement the __str__ method for your custom objects and provide a human-readable string representation for them.

Hope this helps.