Hi,
when testing sage 3.0.5 using py.test, sage fails to import, because
it's using input (?) stream's write and flush methods:
def __init__(self,stream,fallback):
if not hasattr(stream,'write') or not hasattr(stream,'flush'):
stream = fallback
self.stream = stream
E self._swrite = stream.write
> AttributeError: DontReadFromInput instance has no attribute 'write'
[/home/ondra/ext/sage/local/lib/python2.5/site-packages/IPython/genutils.py:54]
________________________________________________________________________________
Full traceback is here:
http://paste.debian.net/11644
Not sure if this is a bug in Sage or py.test, but nevertheless, the
following patch fixes the problem:
--- /tmp/genutils.py 2008-07-19 20:50:56.000000000 +0200
+++ /home/ondra/ext/sage/local/lib/python2.5/site-packages/IPython/genutils.py
2008-07-19
21:00:16.743189357 +0200
@@ -51,8 +51,8 @@
if not hasattr(stream,'write') or not hasattr(stream,'flush'):
stream = fallback
self.stream = stream
- self._swrite = stream.write
- self.flush = stream.flush
+ #self._swrite = stream.write
+ #self.flush = stream.flush
def write(self,data):
try:
Another way to fix it is to put these lines:
import sys
sys.stdin.write = 1
sys.stdin.flush = 1
into a testfile. That's what I am using now. What py.test does is that
it sets sys.stdin to this class:
class DontReadFromInput:
"""Temporary stub class. Ideally when stdin is accessed, the
capturing should be turned off, with possibly all data captured
so far sent to the screen. This should be configurable, though,
because in automated test runs it is better to crash than
hang indefinitely.
"""
def read(self, *args):
raise IOError("reading from stdin while output is captured")
readline = read
readlines = read
__iter__ = read
But I don't understand why ipython wants to write to stdin...
Ondrej
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