使用python编码解码

Question

I have this function in python

Str = "ü";
print Str


def correctText( str ):
  str = str.upper()
  correctedText = str.decode('UTF8').encode('Windows-1252')
  return correctedText; 

corText = correctText(Str); 
print corText

It works and converts characters like ü and é however it fails when i try � and ¶

Is there a way i can fix it?

Answer 1

According to UTF8, à and ¶ are not valid characters, meaning that don't have a number of bytes divisible by 4 (usually). What you need to do is either use some other kind of encoding or strip out errors in your str by using the unicode() function. I recommend using the ladder.

Answer 2

What you are trying to do is to compose valid UTF-8 codes by several consecutive Windows-1252 codes.

For example, for ü , the Windows-1252 code of Ã is C3 and for ¼ it's BC . Together the code C3BC happens to be the UTF-8 code of ü .

Now, for Ã? , the Windows-1252 code is C33F , which is not a valid UTF-8 code (because the second byte does not start with 10 ).

Are you sure this sequence occurs in your text? For example, for à , the Windows-1252 decoding of the UTF-8 code (C3A0) is Ã followed by a non-printable character (non-breaking space). So, if this second character is not printed, the ? might be a regular character of the text.

For ¶ the Windows-1252 encoding is C2B6 . Shouldn't it be ö , for which the Windows-1252 encoding is C3B6 , which equals the UTF-8 code of ö ?