The following Python code returns this error, and I have no idea how to fix it. Any and all help would be appreciated
The following Python code returns this error, and I have no idea how to fix it. Any and all help would be appreciated
Traceback (most recent call last):
File "D:\Grand Canyon University\CST_580\Topic 4\project 6a.py", line 40, in <module>
agent.move()
File "D:\Grand Canyon University\CST_580\Topic 4\project 6a.py", line 13, in move
new_location = self.current_location + direction
~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~
TypeError: unsupported operand type(s) for +: 'int' and 'str'
<start of Python code>
import random
class Agent:
def __init__(self, start_location, destination_location):
self.current_location = start_location
self.destination_location = destination_location
def move(self):
# Randomly choose a direction to move in
direction = random.choice(['up', 'down', 'left', 'right'])
# Move in the chosen direction
new_location = self.current_location + direction
# Calculate the distance to the destination
distance_to_destination = abs(new_location - self.destination_location)
# Reward the agent if it moves closer to the destination
if distance_to_destination < self.current_distance_to_destination:
self.reward += 1
# Penalize the agent if it moves away from the destination
elif distance_to_destination > self.current_distance_to_destination:
self.reward -= 1
# Update the agent's current location
self.current_location = new_location
def is_at_destination(self):
return self.current_location == self.destination_location
# Create an agent at a random start location
agent = Agent(random.randint(0, 10), random.randint(0, 10))
# Set the initial reward to 0
agent.reward = 0
# While the agent is not at the destination, keep moving
while not agent.is_at_destination():
agent.move()
<end of Python code>
The error you are encountering is due to trying to add a string (direction) to an integer (self.current_location) in this line of your code:
1new_location = self.current_location + direction
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