def verify_key_in_shelve(file_name, save_key, file_location):
file = __os.path.join(file_location, file_name)<EOL>shelve_store = __shelve.open(file)<EOL>exists = shelve_store.get(save_key)<EOL>shelve_store.close()<EOL>if exists:<EOL><INDENT>return True<EOL><DEDENT>elif not exists:<EOL><INDENT>return False<EOL><DEDENT>
Function to check for a key in a shelve
Args:
    file_name: Shelve storage file name
    save_key: The name of the key the item is stored in
    file_location: The location of the file, derive from the os module

Returns: returns true or false