I am learning Python classes by writing an adventure game. I have extracted
just the relevant code. The player can look, go, drop, take, inventory but not
examine.
Python produces the error message in the Player class, examine function, in the
first print statement.
I have added the traceback following a suggestion from Wayne Werner.
Traceback (most recent call last):
File adv03.py, line 205, in module
main()
File adv03.py, line 202, in main
game.play(adventurer)
File adv03.py, line 147, in play
character.examine(cmdlist[1])
File adv03.py, line 86, in examine
print Item Description: + item.description + .\n
AttributeError: 'str' object has no attribute 'description'
[Note: actual line numbers appended in comments in this listing]
How do I fix this code, please?
class Player(object):
The player in the game.
def __init__(self, name, currentRoom=None):
self.name = name
self.currentRoom = currentRoom
self.items = [] # items taken by Player
def look(self):
Prints the room description, exits and items in the current room.
print self.currentRoom
def go(self, direction):
Go to another room through an exit.
def drop(self, item):
Drop an item you are carrying in the current room.
def take(self, item):
Take (pick up) an item from the current room.
if item == self.currentRoom.item:
self.items.append(item)
print self.currentRoom.item + added to player's inventory.\n
# remove item from currentRoom
self.currentRoom.item = ''
else:
print There is no + item + here to take!\n
def inventory(self):
Prints list of items the player is carrying.
def examine(self, item):
Prints description of item.
if item in self.items:
# Error: 'str' object has no attribute 'description'
print Item Description: + item.description + .\n # line 86
else:
print You are not holding the + item + to examine!\n
class Item(object):
A useful item in the game.
def __init__(self, name, description, location):
self.name = name
self.description = description
self.location = location
def __str__(self):
Description of item.
return self.description
class Game(object):
The adventure game.
def __init__(self, name, player):
self.name = name
self.player = player
print Welcome to + self.name + \n
print player.currentRoom
def play(self, character):
Command loop for game.
while True: # loop forever
commands = raw_input(- ).lower()
if not commands:
print Huh?
else:
try:
cmdlist = commands.split() # separate commands
action = cmdlist[0]
if action == quit:
print See you later!
break
elif action == look:
elif action == go:
elif action == take:
elif action == drop:
elif action == examine:
if len(cmdlist) != 2:
print An examine command must be followed by an
item name.
continue
else:
character.examine(cmdlist[1]) # line 147
elif action == inventory:
except AttributeError, msg:
print Error - undefined method: + str(msg)
def main():
# Room descriptions
room5 = Room(name=hallway, description=You are in a dark hallway.,
item=diary)
# Item descriptions
diary = Item(name=diary, description=grey-covered Croxley diary,
location=room5)
game.play(adventurer) # line 202
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