Ord函数用法举例子

`ord()`函数在Python中用于获取一个字符的Unicode编码值。下面是一些例子：

1. 获取单个字符的Unicode码点[^1]:

char = 'A'
unicode_value = ord(char)
print(f"The Unicode value of '{char}' is {unicode_value}.")  # 输出: The Unicode value of 'A' is 65.

2. 对于非ASCII字符，如汉字：

char = '你好'
unicode_value = ord(char[0])
print(f"The Unicode value of the first character '{char[0]}' is {unicode_value} (for the full string it's {ord(char)})")

注意，`ord()`只对单个字符有效，所以`char[0]`用来提取第一个字符。

3. 如果输入非字符类型，会抛出异常:

try:
    invalid_input = 123
    unicode_value = ord(invalid_input)  # 这会引发 TypeError
except TypeError as e:
    print(e)  # 输出: ord() expected a character, but string of length 1 found