Use Python's ord() function to get the Unicode encoding value of a character

Use Python's ord() function to obtain the Unicode encoding value of a character

Unicode encoding is a character set used to represent all text symbols. In Python, we can use the ord() function to get the Unicode encoding value of a character.

In the following example, we will demonstrate how to use the ord() function to get the Unicode encoding value of a character:

# 定义一个函数，接受一个字符作为参数，并打印出其Unicode编码值
def get_unicode(char):
    unicode_value = ord(char)
    print(f"字符 '{char}' 的Unicode编码值为: {unicode_value}")

# 使用ord()函数获取字符的Unicode编码值
get_unicode('A')  # 字符 'A' 的Unicode编码值为: 65
get_unicode('中')  # 字符 '中' 的Unicode编码值为: 20013

In the above code, we define a get_unicode() function to Get the Unicode encoding value of the character. This function accepts a character as a parameter, uses the ord() function to obtain the Unicode encoding value of the character, and then prints it out.

When calling the get_unicode() function, we pass in different characters as parameters. For the character 'A', its Unicode encoding value is 65; for the Chinese character '中', its Unicode encoding value is 20013.

In addition to obtaining the Unicode encoding value of characters, the ord() function can also be used to determine the order of characters. Because Unicode encoding is a way of sorting characters, comparing Unicode encoding values ​​can determine the order of characters.

The following is a sample code that demonstrates how to use the ord() function to determine the order of characters:

# 判断两个字符的顺序
def compare_chars(char1, char2):
    if ord(char1) < ord(char2):
        print(f"字符 '{char1}' 排在字符 '{char2}' 前面")
    else:
        print(f"字符 '{char1}' 排在字符 '{char2}' 后面")

# 比较字符的顺序
compare_chars('A', 'B')  # 字符 'A' 排在字符 'B' 前面
compare_chars('中', '国')  # 字符 '中' 排在字符 '国' 前面
compare_chars('Z', 'a')  # 字符 'Z' 排在字符 'a' 后面

In the above code, we define a compare_chars() function to compare two character sequence. According to the Unicode encoding value obtained by the ord() function, we can determine the order of characters.

When we call the compare_chars() function, we pass in different characters as parameters. For the characters 'A' and 'B', the character 'A' is ranked before the character 'B'; for the Chinese characters '中' and '国', the character '中' is ranked before the character '国'; for the characters 'Z' and 'a', the character 'Z' comes after the character 'a'.

Summary:
Python's ord() function is a convenient tool that can be used to obtain the Unicode encoding value of a character. Through Unicode encoding values, we can understand the encoding and order properties of characters to achieve various useful functions. Whether in Unicode processing or character order comparison, the ord() function is a very useful tool.

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