如何在 Python 中将字符串转换为 utf-8 [英] How to convert a string to utf-8 in Python

问题描述

我有一个浏览器将 utf-8 字符发送到我的 Python 服务器，但是当我从查询字符串中检索它时，Python 返回的编码是 ASCII.如何将纯字符串转换为 utf-8?

注意:从网络传递过来的字符串已经是 UTF-8 编码的，我只是想让 Python 把它当作 UTF-8 而不是 ASCII.

解决方案

In Python 2

<预><代码>>>>plain_string = "嗨！";>>>unicode_string = u嗨！">>>类型(plain_string)，类型(unicode_string)(<type 'str'>, <type 'unicode'>)

^ 这是字节串(plain_string)和unicode串的区别.

<预><代码>>>>s =你好！">>>u = unicode(s, utf-8")

^ 转换为 unicode 并指定编码.

在 Python 3 中

所有字符串都是Unicode.unicode 函数不再存在.请参阅@Noumenon 的回答

I have a browser which sends utf-8 characters to my Python server, but when I retrieve it from the query string, the encoding that Python returns is ASCII. How can I convert the plain string to utf-8?

NOTE: The string passed from the web is already UTF-8 encoded, I just want to make Python to treat it as UTF-8 not ASCII.

解决方案

In Python 2

>>> plain_string = "Hi!"
>>> unicode_string = u"Hi!"
>>> type(plain_string), type(unicode_string)
(<type 'str'>, <type 'unicode'>)

^ This is the difference between a byte string (plain_string) and a unicode string.

>>> s = "Hello!"
>>> u = unicode(s, "utf-8")

^ Converting to unicode and specifying the encoding.

In Python 3

All strings are unicode. The unicode function does not exist anymore. See answer from @Noumenon

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