Python内置函数(4)——ascii

英文文档：

ascii(object)

As repr(), return a string containing a printable representation of an object, but escape the non-ASCII characters in the string returned by repr() using \x, \u or \U escapes. This generates a string similar to that returned by repr() in Python 2.

说明：

1. 返回一个可打印的对象字符串方式表示，如果是非ascii字符就会输出\x，\u或\U等字符来表示。与python2版本里的repr()是等效的函数。

>>> ascii(1)
''
>>> ascii('&')
"'&'"
>>> ascii(9000000)
''
>>> ascii('中文') #非ascii字符
"'\\u4e2d\\u6587'"