ru...@yahoo.com wrote:
On May 9, 10:08 am, Steven D'Aprano <st...@remove-this-
cybersource.com.au> wrote:
On Sat, 09 May 2009 08:37:59 -0700, anuraguni...@yahoo.com wrote:
Sorry being unclear again, hmm I am becoming an expert in it.
I pasted that code as continuation of my old code at start i.e
class A(object):
def __unicode__(self):
return u"©au"
def __repr__(self):
return unicode(self).encode("utf-8")
__str__ = __repr__
doesn't work means throws unicode error my question
What unicode error?
Stop asking us to GUESS what the error is, and please copy and paste the
ENTIRE TRACEBACK that you get. When you ask for free help, make it easy
for the people trying to help you. If you expect them to copy and paste
your code and run it just to answer the smallest questions, most of them
won't bother.
It took me less then 45 seconds to open a terminal window, start
Python, and paste the OPs code to get:
class A(object):
... def __unicode__(self):
... return u"©au"
... def __repr__(self):
... return unicode(self).encode("utf-8")
... __str__ = __repr__
...
print unicode(a)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
NameError: name 'a' is not defined
a=A()
print unicode(a)
©au
print unicode([a])
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
UnicodeDecodeError: 'ascii' codec can't decode byte 0xc2 in position
1: ordinal not in range(128)
Which is the same error he had already posted!
It is _not_clear_ that is what was going on.
Your 45 seconds could have been his 45 seconds.
He was describing results rather than showing them.
From your demo, I get to:
unicode(u'\N{COPYRIGHT SIGN}au'.encode('utf-8'))
raises an exception (which it should).
unicode(u'\N{COPYRIGHT SIGN}au'.encode('utf-8'), 'utf-8')
Does _not_ raise an exception (as it should not).
Note that his __repr__ produces characters which are not ASCII.
So, str or repr of a list containing those elements will also
be non-ascii. To convert non-ASCII strings to unicode, you must
specify a character encoding.
The object a (created with A()) can be converted directly to
unicode (via its unicode method). No problem.
The object A() may have its repr taken, which is a (non-unicode)
string which is not ASCII. But you cannot take unicode(repr(a)),
because repr(a) contains a character > '\x7f'.
What he was trying to do was masking the issue. Imagine:
class B(object):
def __unicode__(self):
return u'one'
def __repr__(self):
return 'two'
def __str__(self):
return 'three'
b = B()
print b, unicode(b), [b]
By the way, pasting code with non-ASCII characters does not mean
your recipient will get the characters you pasted.
--Scott David Daniels
scott.dani...@acm.org
--
http://mail.python.org/mailman/listinfo/python-list
