[Python] judge system encoding and character encoding chardet

Here we use chardet, a character encoding module, which can be directly installed using esay_install.

OS environment win7 ide: wingide

1. Use the default environment Encoding

 
'''View system encoding ''' import sys print 'System encoding: ', sys. getdefaultencoding () ''' view string encoding ''' import chardets = 'Hello s' print S print chardet. detect (s)
 

The output is

 
System encoding: ASCII Hello s {'confidence ': 0.99, 'encoding': 'gb2312 '}
 

Here we can see that the system code is ASCII, And the IDE code is gb2312, so the display is normal.

2 Add the header file # Coding = utf8

 
# Coding = utf8''' view system encoding ''' import sys print 'System encoding: ', sys. getdefaultencoding () ''' view string encoding ''' import chardets = 'Hello s' print S print chardet. detect (s)
 

Output

System encoding: ASCII audio codecs {'confidence ': 0.7525, 'encoding': 'utf-8 '}
 

At this time, the output is garbled, that is, the characters have already become UTF-8 encoded, but the output is garbled. I suspect it is an IDE output encoding problem, but I cannot find the option to change the IDE output character encoding.

Using the command line, this file is still output, that is, the ASCII code used for output.

3. Decode s in the output.

 
# Coding = utf8''' view system encoding ''' import sys print 'System encoding: ', sys. getdefaultencoding () ''' view string encoding ''' import chardets = 'Hello s' print S print chardet. detect (s) Ss = S. decode ('utf-8') # utf8 decodes print SS print chardet. detect (SS)
 

Output

System encoding: ASCII audio codecs {'confidence ': 0.7525, 'encoding': 'utf-8'} Hello SD: \ devsofts \ python2.7 \ Lib \ Site-packages \ chardet-2.1.1-py2.7.egg \ chardet \ universaldetector. PY: 90: unicodewarning: Unicode equal comparison failed to convert both arguments to Unicode-interpreting them as being unequal {'confidence ': 1.0, 'encoding': 'ascii '}
 

It is strange that the code displayed after UTF-8 decoding is normal, but the final encoding is changed to ASCII ?? A lot of questions

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