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  1. # coding: utf-8
  2. from __future__ import print_function
  3.  
  4. import io
  5. import unicodedata
  6. from pprint import PrettyPrinter
  7.  
  8. NON_PRINTABLE_CATEGORIES = set(('Cc', 'Cf', 'Cs', 'Co', 'Cn', 'Zl', 'Zp', 'Zs'))
  9.  
  10.  
  11. def escape_non_printable_unicode(ustring):
  12.     assert isinstance(ustring, unicode)
  13.  
  14.     def is_printable(uchar):
  15.         return unicodedata.category(uchar) not in NON_PRINTABLE_CATEGORIES
  16.  
  17.     buf = []
  18.     for uchar in ustring:
  19.         if uchar in (u'\\', u'\''):
  20.             buf.append(u'\\' + uchar)
  21.         elif uchar == u' ' or is_printable(uchar):
  22.             buf.append(uchar)
  23.         else:
  24.             buf.append(uchar.encode('unicode_escape').decode('ascii'))
  25.  
  26.     return u''.join(buf)
  27.  
  28.  
  29. class BytesFriendlyStringIO(io.StringIO):
  30.  
  31.     def write(self, s):
  32.         if isinstance(s, str):
  33.             s = s.decode('ascii')
  34.         return super(BytesFriendlyStringIO, self).write(s)
  35.  
  36.  
  37. class UnicodePrittyPrinter(PrettyPrinter):
  38.  
  39.     def pformat(self, object):
  40.         sio = BytesFriendlyStringIO()
  41.         self._format(object, sio, 0, 0, {}, 0)
  42.         return sio.getvalue()  # Returns unicode not str
  43.  
  44.     def format(self, object, context, maxlevels, level):
  45.         if isinstance(object, unicode):
  46.             return (u"u'{0}'".format(escape_non_printable_unicode(object)), True, False)
  47.         return PrettyPrinter.format(self, object, context, maxlevels, level)
  48.  
  49. unicode_printer = UnicodePrittyPrinter()
  50.  
  51.  
  52. if __name__ == '__main__':
  53.     import sys, codecs
  54.     sys.stdout = codecs.getwriter("utf-8")(sys.stdout)
  55.  
  56.     test_string = u'あいうえお\tかきくけこ\nさしすせそ　たちつてと Catal\xe0\x01 \\\'"'
  57.     print(test_string)
  58.     print(repr(test_string))
  59.     print(unicode_printer.pformat(test_string))
Success #stdin #stdout 0.02s 9016KB
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Standard input is empty
stdout
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あいうえお	かきくけこ
さしすせそ　たちつてと Català \'"
u'\u3042\u3044\u3046\u3048\u304a\t\u304b\u304d\u304f\u3051\u3053\n\u3055\u3057\u3059\u305b\u305d\u3000\u305f\u3061\u3064\u3066\u3068 Catal\xe0\x01 \\\'"'
u'あいうえお\tかきくけこ\nさしすせそ\u3000たちつてと Català\x01 \\\'"'
https://ideone.com/J77aaN
License: CC0
language:
Python (cpython 2.7.16)
created:
8 years ago
visibility:
public

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