GUID Magic | Python Fiddle

# analgous to a C hash table, so lookups are O(1)
guids = {
    '********************000000012345': 'Boat',        
    '12345***************************': 'Unicycle',    
    'BRUCE***************************': 'Batmobile',     
    '****************************1337': 'Toyota Hilux',        
}

def prefilter(string, placeholder = '*', min_length = 32):
    str_len = len(string)
    left = string
    right = string
    if str_len < min_length:
        diff = min_length - str_len
        left = placeholder * diff + left
        right = right + placeholder * diff
    return (left, right)

def get_category(string, placeholder = '*', min_length = 32):
    str_len = len(string)
    if str_len < min_length:
        left,right = prefilter(string, placeholder, min_length)
        get_left = get_category(left, placeholder, min_length)
        if get_left:
            return get_left
        get_right = get_category(right, placeholder, min_length)
        if get_right:
            return get_right
    for i in range(32):
        right = string[:-i] + placeholder * i
        if right in guids:
            return guids[right]
        left = placeholder * i + string[i:]
        if left in guids:
            return guids[left]
    return False
   
   
# right side
print(get_category('BRUCE00'))
print(get_category('12345'))

# left side
print(get_category('A*******************000000012345'))
print(get_category('**WOT**********1337'))

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