Python字典:元组作为键，元组列表作为值

# 创建一个字典，使用元组作为键，元组列表作为值
data = {
    (1, 'a'): [(10, 'x'), (20, 'y')],
    (2, 'b'): [(30, 'z'), (40, 'w')],
    (1, 'c'): [(50, 'v')]
}

# 添加新的键值对
data[(3, 'd')] = [(60, 'u')]

# 访问特定键的值
print(data[(1, 'a')])  # 输出: [(10, 'x'), (20, 'y')]

# 修改特定键的值
data[(1, 'a')] = [(100, 'X'), (200, 'Y')]
print(data[(1, 'a')])  # 输出: [(100, 'X'), (200, 'Y')]

# 删除特定键值对
del data[(2, 'b')]
print(data)  # 输出: {(1, 'a'): [(100, 'X'), (200, 'Y')], (1, 'c'): [(50, 'v')], (3, 'd'): [(60, 'u')]}

# 遍历字典
for key, value in data.items():
    print(f"Key: {key}, Value: {value}")

if (1, 'a') not in data:
    data[(1, 'a')] = [(100, 'X'), (200, 'Y')]

value = data.get((2, 'b'), [])
print(value)  # 输出: []