【转】Python内置函数(10)——chr
英文文档:
chr
(i)
Return the string representing a character whose Unicode code point is the integeri. For example,chr(97)
returns the string'a'
, whilechr(8364)
returns the string'€'
. This is the inverse oford()
.
The valid range for the argument is from 0 through 1,114,111 (0x10FFFF in base 16).ValueError
will be raised ifiis outside that range
说明:
1. 函数返回整形参数值所对应的Unicode字符的字符串表示
>>> chr(97) #参数类型为整数
'a'
>>> chr('97') #参数传入字符串时报错
Traceback (most recent call last):
File "<pyshell#6>", line 1, in <module>
chr('97')
TypeError: an integer is required (got type str)
>>> type(chr(97)) #返回类型为字符串
<class 'str'>
2. 它的功能与ord函数刚好相反
>>> chr(97)
'a'
>>> ord('a')
97
3. 传入的参数值范围必须在0-1114111(十六进制为0x10FFFF)之间,否则将报ValueError错误
>>> chr(-1) #小于0报错
Traceback (most recent call last):
File "<pyshell#10>", line 1, in <module>
chr(-1)
ValueError: chr() arg not in range(0x110000)
>>> chr(1114111)
'\U0010ffff'
>>> chr(1114112) #超过1114111报错
Traceback (most recent call last):
File "<pyshell#13>", line 1, in <module>
chr(1114112)
ValueError: chr() arg not in range(0x110000)
出处:http://www.cnblogs.com/sesshoumaru/
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发布于 2020-11-18 21:34