Removing u in list

Question

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 

Final output:

[u'{email:[email protected],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}'] 

Answer 1

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.

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' 

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.

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' 

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.

Answer 2

arr = [str(r) for r in arr] 

This basically converts all your elements in string. Hence removes the encoding. Hence the u which represents encoding gets removed Will do the work easily and efficiently