from random import seed as srand, randint
from time import time

srand(time())

class Card:
    types = ("def", "atk")
    limits = {"def": (1, 25), "atk": (1, 40)}

    def __init__(self, type = None, value = None):
        if type:
            if not type in types:
                print("ERROR: Invalid card type")
                return False
        else:
            # Randomize card type
            type = Card.types[randint(len(Card.types))]

        self.type = type
        self.value = randint(Card.limits[type][0], Card.limits[type][1])

from random import seed as srand, randint
from time import time

srand(time())

class Card:
    card_types = ("def", "atk")
    card_limits = {"def": (1, 25), "atk": (1, 40)}

    def __init__(self, card_type = None, card_value = None):
        if card_type:
            if not card_type in card_types:
                print("ERROR: Invalid card type")
                return False
        else:
            # Randomize card type
            card_type = Card.card_types[randint(len(Card.card_types))]

        self.card_type = card_type
        self.value = randint(card_limits[card_type][0],
            card_limits[card_type][1])

Change variable names to remove conflict with standard functions
Change variable names to remove conflict with standard functions

  from random import seed as srand, randint
  from time import time
  
  srand(time())
  
  class Card:
-     types = ("def", "atk")
+     card_types = ("def", "atk")
-     limits = {"def": (1, 25), "atk": (1, 40)}
+     card_limits = {"def": (1, 25), "atk": (1, 40)}
  
-     def __init__(self, type = None, value = None):
+     def __init__(self, card_type = None, card_value = None):
-         if type:
+         if card_type:
-             if not type in types:
+             if not card_type in card_types:
                  print("ERROR: Invalid card type")
                  return False
          else:
              # Randomize card type
-             type = Card.types[randint(len(Card.types))]
+             card_type = Card.card_types[randint(len(Card.card_types))]
  
-         self.type = type
+         self.card_type = card_type
-         self.value = randint(Card.limits[type][0], Card.limits[type][1])
+         self.value = randint(card_limits[card_type][0],
+             card_limits[card_type][1])
  
Change variable names to remove conflict with standard functions
## Code Before:
from random import seed as srand, randint
from time import time

srand(time())

class Card:
    types = ("def", "atk")
    limits = {"def": (1, 25), "atk": (1, 40)}

    def __init__(self, type = None, value = None):
        if type:
            if not type in types:
                print("ERROR: Invalid card type")
                return False
        else:
            # Randomize card type
            type = Card.types[randint(len(Card.types))]

        self.type = type
        self.value = randint(Card.limits[type][0], Card.limits[type][1])

## Instruction:
Change variable names to remove conflict with standard functions
## Code After:
from random import seed as srand, randint
from time import time

srand(time())

class Card:
    card_types = ("def", "atk")
    card_limits = {"def": (1, 25), "atk": (1, 40)}

    def __init__(self, card_type = None, card_value = None):
        if card_type:
            if not card_type in card_types:
                print("ERROR: Invalid card type")
                return False
        else:
            # Randomize card type
            card_type = Card.card_types[randint(len(Card.card_types))]

        self.card_type = card_type
        self.value = randint(card_limits[card_type][0],
            card_limits[card_type][1])
