[Python] Trouble with getting items from rooms

I'm trying to write code that lets you get an item from a room and puts it in your inventory, but no matter what I try the function either doesn't execute or gets an error. Here's what I have as of this post:

room = {
'Main Entry': {'East': 'Main Floor'},
'Main Floor': {'North': 'North Hall', 'South': 'South Hall', 'East': 'Clothes Store', 'West': 'Main Entry', 'item': 'Gas Mask'},
'South Hall': {'East': 'Food Court', 'North': 'Main Floor', 'item': 'Knowledge of Toaster Store'},
'North Hall': {'East': 'Storage Room', 'South': 'Main Floor', 'item': 'Stuffed Shark'},
'Food Court': {'West': 'South Hall', 'item': 'Block of Old Cheese'},
'Clothes Store': {'North': 'Theater', 'West': 'Main Floor', 'item': 'Baseball Bat'},
'Theater': {'South': 'Clothes Store'}
}

item = {
'Gas Mask',
'Stuffed Shark',
'Bubble Wrap',
'Knowledge of Toaster Store',
'Block of Old Cheese',
'Baseball Bat'
}

inventory = {

}

#The current_room function tracks which "room" the user is in, and starts them in the Main Entry
current_room = 'Main Entry'
print('Allister & Doodle enter the mall. The word was, one of their recurring enemies-Lumina the jellyfish lady-was putting' \
'together a makeshift doomsday device! They figured it was unlikely to do actual doomsday levels of damage, but they had the day' \
'off and figured they might as well try and put a stop to it. Because they''re just that nice!' \
'Input Search to look for items! You''ll need Bubble Wrap, a Baseball Bat, and a Block of Old Cheese to win the game.' \
'Once-and only once-you have all three, make your way to the Theater (North of the Clothes Store) for the final showdown!' \
'Input North, South, East, or West to have them move through the mall! Or input exit, if you have something better to do.')

#The while loop plays until the user enters exit, to which it then ends the game.
while current_room != 'exit':
print(f"Allister & Doodle are in the {current_room}")
command = input("Enter command: ")
if command == 'exit':
current_room = 'exit'
if command == 'Search':
if item in room[current_room]['item']:
inventory.append(item)
else:
print(f"Nothin'.")
elif command in ['North', 'South', 'East', 'West']:
direction = command
if direction in room[current_room]:
current_room = room[current_room][direction]
else:
print("Can't go that way")
else:
print("No can do")

print("You have exited the game.")


Right now, I'm consistently getting this error:

Traceback (most recent call last):
File "c:\Users\name\folder\folder1\folder2\file.py", line 43, in <module>
if **item in room[current_room]['item']:
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^**
TypeError: 'in <string>' requires string as left operand, not set


What do I need to do to fix this?

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