如何在Python中打印Unicode字符代码？

Question

I would like to print a unicode's character code, and not the actual glyph it represents in Python.

For example, if u is a list of unicode characters:

>>> u[0]
u'\u0103'
>>> print u[0]
ă

I would like to output the character code as a raw string: u'\ă' .

I have tried to just print it to a file, but this doesn't work without encoding it in UTF-8 .

>>> w = open('~/foo.txt', 'w')
>>> print>>w, u[0].decode('utf-8')

Traceback (most recent call last):
  File "<pyshell#33>", line 1, in <module>
    print>>w, u[0].decode('utf-8')
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/encodings/utf_8.py", line 16, in decode
    return codecs.utf_8_decode(input, errors, True)
UnicodeEncodeError: 'ascii' codec can't encode character u'\u0103' in position 0: ordinal not in range(128)
>>> print>>w, u[0].encode('utf-8')
>>> w.close()

Encoding it results in the glyph ă being written to the file.

How can I write the character code?

Answer 1

For printing raw unicode data one only need specify the correct encoding:

>>> s = u'\u0103'
>>> print s.encode('raw_unicode_escape')
\u0103