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什么编码看起来像ASCII码,但在每个字节之前有空字节?

character-encoding python

ibz · 技术社区 · 15 年前

s = u'\x00Q\x00u\x00i\x00c\x00k'
>>> print s
Quick
>>>
>>> s == 'Quick'
False
>>>
>>> import re
>>> re.search('Quick', s)
>>>
>>> import chardet
>>> chardet.detect(s)
/usr/lib/pymodules/python2.6/chardet/universaldetector.py:69: UnicodeWarning: Unicode equal comparison failed to convert both arguments to Unicode - interpreting them as being unequal
  if aBuf[:3] == '\xEF\xBB\xBF':
/usr/lib/pymodules/python2.6/chardet/universaldetector.py:72: UnicodeWarning: Unicode equal comparison failed to convert both arguments to Unicode - interpreting them as being unequal
  elif aBuf[:4] == '\xFF\xFE\x00\x00':
/usr/lib/pymodules/python2.6/chardet/universaldetector.py:75: UnicodeWarning: Unicode equal comparison failed to convert both arguments to Unicode - interpreting them as being unequal
  elif aBuf[:4] == '\x00\x00\xFE\xFF':
/usr/lib/pymodules/python2.6/chardet/universaldetector.py:78: UnicodeWarning: Unicode equal comparison failed to convert both arguments to Unicode - interpreting them as being unequal
  elif aBuf[:4] == '\xFE\xFF\x00\x00':
/usr/lib/pymodules/python2.6/chardet/universaldetector.py:81: UnicodeWarning: Unicode equal comparison failed to convert both arguments to Unicode - interpreting them as being unequal
  elif aBuf[:4] == '\x00\x00\xFF\xFE':
/usr/lib/pymodules/python2.6/chardet/universaldetector.py:84: UnicodeWarning: Unicode equal comparison failed to convert both arguments to Unicode - interpreting them as being unequal
  elif aBuf[:2] == '\xFF\xFE':
/usr/lib/pymodules/python2.6/chardet/universaldetector.py:87: UnicodeWarning: Unicode equal comparison failed to convert both arguments to Unicode - interpreting them as being unequal
  elif aBuf[:2] == '\xFE\xFF':
{'confidence': 1.0, 'encoding': 'ascii'}
>>>
>>> chardet.detect(s)
{'confidence': 1.0, 'encoding': 'ascii'}
>>>

2 回复 | 直到 15 年前

Delan Azabani 15 年前

UTF-16大端

John Machin Santi 15 年前

你有UTF-16BE没有BOM。如文档所述,chardet在没有BOM的情况下不会使用UTF nnxE。

>>> s = '\x00Q\x00u\x00i\x00c\x00k' #### Note: dropping the spurious `u` prefix
>>> s.decode('utf_16be')
u'Quick'
>>>

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