在列表中删除你 [英] Removing u in list

问题描述

我已经阅读了删除列表中的字符'u'，但我使用谷歌应用程序引擎，它似乎并没有工作！

I have read up on remove the character 'u' in a list but I am using google app engine and it does not seem to work!

def get(self):
    players = db.GqlQuery("SELECT * FROM Player")
    print players
    playerInfo  = {}

    test = []

    for player in players:
        email =  player.email
        gem =  str(player.gem)
        a = "{email:"+email + ",gem:" +gem +"}"

        test.append(a)


    ast.literal_eval(json.dumps(test))
    print test

最终输出：

Final output:

[u'{email:[e-mail],gem:0}', u'{email:test,gem:0}', u'{email:test,gem:0}', u'{email:test,gem:0}', u'{email:test,gem:0}', u'{email:test1,gem:0}']

推荐答案

'u'是字符串外部表示的一部分，意思是一个Unicode字符串，而不是一个te字符串。它不在字符串中，它是类型的一部分。

That 'u' is part of the external representation of the string, meaning it's a Unicode string as opposed to a byte string. It's not in the string, it's part of the type.

例如，您可以使用相同的synax创建新的Unicode字符串字面值。例如：

As an example, you can create a new Unicode string literal by using the same synax. For instance:

>>> sandwich = u"smörgås"
>>> sandwich
u'sm\xf6rg\xe5s'

这会创建一个新的Unicode字符串其价值是瑞典三明治的词。您可以看到非英文字符由Unicode代码点表示，ö是 \xf6 ，并且<是code> \ xe5 。 'u'前缀与您的示例中显示的相似，表示该字符串包含Unicode文本。

This creates a new Unicode string whose value is the Swedish word for sandwich. You can see that the non-English characters are represented by their Unicode code points, ö is \xf6 and å is \xe5. The 'u' prefix appears just like in your example to signify that this string holds Unicode text.

为了摆脱这些，需要将Unicode字符串编码为面向字节的表示，如UTF-8。您可以使用例如：

To get rid of those, you need to encode the Unicode string into some byte-oriented representation, such as UTF-8. You can do that with e.g.:

>>> sandwich.encode("utf-8")
'sm\xc3\xb6rg\xc3\xa5s'

在这里，我们得到一个没有前缀'u'的新字符串，因为这是一个字节字符串。它包含表示Unicode字符串字符的字节，由于UTF-8编码的奇迹，瑞典字符会产生多个字节。

Here, we get a new string without the prefix 'u', since this is a byte string. It contains the bytes representing the characters of the Unicode string, with the Swedish characters resulting in multiple bytes due to the wonders of the UTF-8 encoding.

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