clarify error message
commit519f68a1ff90a41211a0459365223e3af9022c79
authorJörg Lehmann <joergl@users.sourceforge.net>
Wed, 10 May 2006 12:56:50 +0000 (10 12:56 +0000)
committerJörg Lehmann <joergl@users.sourceforge.net>
Wed, 10 May 2006 12:56:50 +0000 (10 12:56 +0000)
treef769c218cd168b09d0ec8ace33671c37d77eebb0
parent18b31e0fac0e9edf2bb447cc94e5185e3eac33b9
clarify error message

git-svn-id: https://pyx.svn.sourceforge.net/svnroot/pyx/trunk/pyx@2644 069f4177-920e-0410-937b-c2a4a81bcd90
pyx/graph/graph.py