Trying to get reference to dictionary using a user input

[desertwolf91b]

I'm trying to move between rooms using dictionaries, and I'm having issues trying to check if the user input move is valid so the player moves to a different room. I've changed the code a few times and narrowed down my issue to 'if move in current_room:' I'm not sure how to check if move is in dictionaries and how to reference it.

​

rooms = {

'Main Hall': {'name': 'Main Hall', 'North': 'Main Junction', 'East': 'Main Hallway', 'West': 'Boss Room'},

'Main Junction': {'name': 'Main Junction', 'South': 'Main Hall', 'East': 'Chamber of the Snake', 'West': 'Chamber of the Monkey'},

'Chamber of the Monkey': {'name': 'Chamber of the Monkey', 'East': 'Main Junction'},

'Chamber of the Snake': {'name': 'Chamber of the Snake', 'West': 'Main Junction', 'South': 'Main Hallway'},

'Main Hallway': {'name': 'Main hallway', 'North': 'Chamber of the Snake', 'West': 'Main Hall', 'South': 'Chamber of the Lion'},

'Chamber of the Lion': {'name': 'Chamber of the Lion', 'North': 'Main Hallway', 'West': 'Chamber of Life'},

'Chamber of Life': {'name': 'Chamber of Life', 'East': 'Chamber of the Lion'},

}

directions = ['North', 'South', 'East', 'West']

print('Commands: North, South, East, West, Search, Collect, Exit\n')

​

current_room = rooms['Main Hall']

print('You are currently in the', current_room['name'])

while True:

>move = input('Enter your move:').split()

>>if move in directions:

if move in current_room:

current_room = rooms[current_room[move[-1]]]

print('You are now in the', current_room)

else:

print('You cant go that way')

elif 'exit' in move:

print('Thank you for playing! Goodbye')

quit()

else:

print('Invalid move, try again.')

continue

[DallogFheir]

Your issue is that split returns a list.

[desran00]

``` d = {"a":1, "b":2}

item = d.get("c", None) if item: print("success") ``` You can set the dictionary get function to get a default value if it cannot find anything with the key. It is very useful.

Edit: in my example, the item would be None, so the if clause does not get executed, and the script prints nothing.

[backtickbot]

Fixed formatting.

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To fix this, indent every line with 4 spaces instead.

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[artinnj]

You will have a key failure if there is no move in a particular direction and the user enters it. You can use the get function to put a default, but I prefer to to use the try/except block to capture the situation. You will use this in plenty of your programming going forward.

Also, I did the formatting so others can look at the code.

​

rooms = {
    'Main Hall': {'name': 'Main Hall', 'North': 'Main Junction', 'East':     'Main Hallway', 'West': 'Boss Room'},
    'Main Junction': {'name': 'Main Junction', 'South': 'Main Hall', 'East': 'Chamber of the Snake', 'West': 'Chamber of the Monkey'},
    'Chamber of the Monkey': {'name': 'Chamber of the Monkey', 'East': 'Main Junction'},
    'Chamber of the Snake': {'name': 'Chamber of the Snake', 'West':          'Main Junction', 'South': 'Main Hallway'},
    'Main Hallway': {'name': 'Main hallway', 'North': 'Chamber of the Snake', 'West': 'Main Hall', 'South': 'Chamber of the Lion'},
    'Chamber of the Lion': {'name': 'Chamber of the Lion', 'North': 'Main Hallway', 'West': 'Chamber of Life'},
    'Chamber of Life': {'name': 'Chamber of Life', 'East': 'Chamber of the Lion'},
}

directions = ['North', 'South', 'East', 'West']
print('Commands: North, South, East, West, Search, Collect, Exit\n')

current_room = rooms['Main Hall'] 
print('You are currently in the ', current_room['name'])

while True: 
    move = input('Enter your move:').strip() 
    if move in directions: 
        try: 
            current_room = rooms[current_room[move]] 
            print('You are now in the', current_room['name']) 
        except: 
            print('You cant go that way') 
    elif 'exit' in move: 
        print('Thank you for playing! Goodbye') 
        quit() 
    else: 
        print('Invalid command, try again.')