循环字典后的Keyerror

my_dict = {'key1': 'value1', 'key2': 'value2'}

for key in my_dict:
    if key in my_dict:
        # 执行相应的操作
        print(my_dict[key])

my_dict = {'key1': 'value1', 'key2': 'value2'}

for key in my_dict:
    value = my_dict.get(key)
    if value is not None:
        # 执行相应的操作
        print(value)

my_dict = {'key1': 'value1', 'key2': 'value2'}

for key in my_dict:
    try:
        # 执行相应的操作
        print(my_dict[key])
    except KeyError:
        # 处理KeyError异常
        print("Key不存在")