字典内查找值等于

如果您想在 Python 字典中查找某个键对应的值，可以使用如下的代码：

my_dict = {"apple": 1, "banana": 2, "orange": 3}
key_to_find = "banana"

if key_to_find in my_dict:
    value = my_dict[key_to_find]
    print(f"The value of {key_to_find} is {value}.")
else:
    print(f"{key_to_find} is not found in the dictionary.")

如果您想查找字典中的某个值，可以使用字典的 `values()` 方法遍历所有的值，例如：

my_dict = {"apple": 1, "banana": 2, "orange": 3}
value_to_find = 2

if value_to_find in my_dict.values():
    for key, value in my_dict.items():
        if value == value_to_find:
            print(f"The key of {value_to_find} is {key}.")
else:
    print(f"{value_to_find} is not found in the dictionary.")