On 04/08/2013 08:40 AM, Sydney Shall wrote:
Hi,
I am learning Python.
I use MAC OSX 10.6.8
Python 2.7.3
I have been given a project to write a program involving random walks.
I have drafted a program which has passed all the static tests, but on
testing my program i get the following error message:
Traceback (most recent call last):
File "/Users/Sydney/Documents/6.00x Files/Problem
Sets/ProblemSet7/ps7 copy.py", line 303, in <module>
testRobotMovement(StandardRobot, RectangularRoom)
File "ps7_verify_movement.py", line 12, in testRobotMovement
File "/Users/Sydney/Documents/6.00x Files/Problem
Sets/ProblemSet7/ps7 copy.py", line 285, in updatePositionAndClean
while self.room.isPositionInRoom(self.position) == False:
File "/Users/Sydney/Documents/6.00x Files/Problem
Sets/ProblemSet7/ps7 copy.py", line 163, in isPositionInRoom
return self.room[(x,y)] in self.room
KeyError: (<bound method Position.getX of <__main__.Position object at
0x4699490>>, <bound method Position.getY of <__main__.Position object at
0x4699490>>)
>>>
The program text referred to is the following, I give the whole module,
which is part of a larger program.
def isPositionInRoom(self, pos):
"""
Return True if pos is inside the room.
pos: a Position object.
returns: True if pos is in the room, False otherwise.
"""
x = pos.getX
y = pos.getY
You never show the code for Position.getX and Position.getY, but I'd
expect they're methods that take no arguments. in that case, you need
parens in order to call them.
x = pos.getX()
y = pos.getY()
return self.room[(x,y)] in self.room
a simple print of x and y could have revealed this as well.
--
DaveA
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