Python 函数 —— ord(), chr()

原创于 2017-05-07 14:56:29 发布 · 573 阅读

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#python #string #函数 #character #unicode

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本文介绍了如何使用Python内置函数chr()和ord()进行Unicode字符与整数之间的相互转换。chr()函数接受一个整数作为参数，并返回对应的Unicode字符；ord()函数则相反，它接受一个Unicode字符并返回其对应的整数值。

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chr(i)

Return the string representing a character whose Unicode code point is the integer i. For example, chr(97) returns the string ‘a’, while chr(8364) returns the string ‘€’. This is the inverse of ord().

The valid range for the argument is from 0 through 1,114,111 (0x10FFFF in base 16). ValueError will be raised if i is outside that range.

In [4]: chr(14)
Out[4]: '\x0e'

In [5]: chr(44)
Out[5]: ','

In [6]: chr(60)
Out[6]: '<'

ord(c)

Given a string representing one Unicode character, return an integer representing the Unicode code point of that character. For example, ord(‘a’) returns the integer 97 and ord(‘€’) (Euro sign) returns 8364. This is the inverse of chr().

In [7]: ord('a')
Out[7]: 97

In [8]: chr(97)
Out[8]: 'a'