如何拆分输入来创建字典？

def create_dict(input_str, delimiter):
    key_value_pairs = input_str.split(delimiter)
    my_dict = {}
    for pair in key_value_pairs:
        key, value = pair.split(':')
        my_dict[key] = value
    return my_dict

input_str = "name:John,age:25,city:New York"
delimiter = ","
result_dict = create_dict(input_str, delimiter)
print(result_dict)

{'name': 'John', 'age': '25', 'city': 'New York'}