如何计算一个值在字典中出现的次数？

def count_value_occurrences(dictionary, value):
    count = 0
    for key, val in dictionary.items():
        if val == value:
            count += 1
    return count

# 示例用法
my_dict = {'a': 1, 'b': 2, 'c': 1, 'd': 3, 'e': 1}
value_to_count = 1
occurrences = count_value_occurrences(my_dict, value_to_count)
print(f"The value {value_to_count} appears {occurrences} times in the dictionary.")