Why does a floating point input not identifiable?

This is my code and I am trying to move from one area to another using the move_player() function. The code is not changing the current_location variable and I have no idea why. Please help me

#The dictionary of areas which links the areas together along with the item in each area

areas = {
    'geysers':{'north':'caves', 'south':'fields', 'east':'swamps', 'west':'treetops', 'item':'start'},
    'caves':{'south':'geysers', 'east':'cliffs', 'item':'sword'},
    'fields':{'north':'geysers', 'east':'temple', 'item':'bandages'},
    'swamps':{'north':'pond', 'west':'geysers', 'item':'tranquilizer'},
    'treetops':{'east':'geysers', 'item':'blowtorch'},
    'cliffs':{'west':'caves', 'item':'shield'},
    'pond':{'south':'swamps', 'item':'javelin'},
    'temple':{'west':'fields', 'item':'villain'}
}
current_location = 'geysers'


#function to handle invalid entries for moving the player
def invalid_move():
    print('Move not valid. Try again.')


#get the player's next move and put it in a list for validation
player_input = input('Enter your move:\n>').lower().split()


def move_player(location, player_move):
    new_location = location
    if player_move[0] == 'go':
        if player_move[1] in areas[location] and player_move[1] != 'item':
            new_location = areas[location][player_move[1]]
        else:
            invalid_move()
    else:
        invalid_move()
    return new_location


move_player(current_location, player_input)
print(current_location)

Solution

Note that your move_player function returns a value. When you called the move_player function, you did not assign the returned value to any variable, hence the function call did nothing. In order to have the returned value reflect in the current_location variable, replace this line:

move_player(current_location, player_input)

with:

current_location = move_player(current_location, player_input)