Would better to post to sage-support.
What about doing the test in the console? You can also change the doctest to
m2.__repr__()
that would show the traceback.
Vincent
On 10/01/16 08:16, Daniel Krenn wrote:
I am trying to rewrite some code and have troubles with the following code:
cdef str s = self.name
if s:
s += ' '
s += self.opening_delimiter
cdef list E = list('{!r}'.format(self.get(n))
for n in xrange(min(num_elts, self.preview)))
if num_elts >= self.preview:
# PROBLEM/BUG with the following code line
# (run doctests of this file to see)
E.append(self.more) # <<<<<<<<<<<<<<< here
s += self.separator.join(E)
s += self.closing_delimiter
return s
With the marked line, many doctests fail; like this:
Failed example:
m2
Expected:
lazy list [8, 10, 12, ...]
Got:
<repr(<sage.data_structures.lazy_list.lazy_list_abstract at
0x7f684d746d40>) failed: TypeError: unsupported operand type(s) for +=:
'NoneType' and 'NoneType'>
Any ideas what goes wrong? (I've debugged now for over one hour and have
no glue (but I am no Cython expert)).
I've also tried without the "cdef str" and "cdef list" above. The
strings self.* are defined in the corresponding .pxd
A branch with the code is on trac: u/dkrenn/cython-str-problem-append
file sage/data_structures/lazy_list.pyx, method __repr__, line 502
Best Daniel
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