python去掉字符串u

Ⅰ python关于string(字符串)的问题： 删除重复的字母

普通字符串可以用多种方式编码成unicode字符串，具体要看你究竟选择了哪种编码：
unicodestring
=
u"hello
world"
#
将unicode转化为普通python字符串："encode"
utf8string
=
unicodestring.encode("utf-8")
asciistring
=
unicodestring.encode("ascii")
isostring
=
unicodestring.encode("iso-8859-1")
utf16string
=
unicodestring.encode("utf-16")
#
将普通python字符串转化为unicode："decode"
plainstring1
=
unicode(utf8string,
"utf-8")
plainstring2
=
unicode(asciistring,
"ascii")
plainstring3
=
unicode(isostring,
"iso-8859-1")
plainstring4
=
unicode(utf16string,
"utf-16")
assert
plainstring1
==
plainstring2
==
plainstring3
==
plainstring4

Ⅱ python求助字符串删除指定子串

望采纳~

import re#re是正则表达式模块

a = '北(běi)京(jīng)是(shì)中(zhōng)国(guó)的(de)首(shǒu)都(dū)'

a = re.sub('(.+?)', '', a)

print(a)