将字典合并为一个，并查找均值

# 合并字典
def merge_dicts(*dicts):
    merged_dict = {}
    for d in dicts:
        merged_dict.update(d)
    return merged_dict

# 计算均值
def calculate_mean(dict):
    values = dict.values()
    total = sum(values)
    count = len(values)
    mean = total / count
    return mean

# 示例数据
dict1 = {'a': 1, 'b': 2, 'c': 3}
dict2 = {'d': 4, 'e': 5, 'f': 6}
dict3 = {'g': 7, 'h': 8, 'i': 9}

# 合并字典
merged_dict = merge_dicts(dict1, dict2, dict3)
print("合并后的字典：", merged_dict)

# 计算均值
mean_value = calculate_mean(merged_dict)
print("均值：", mean_value)