i do confirm same problem with pangocairo.so crasing pydoc system is 64 bit, on 32 bit works without problems.
$ file /usr/lib/python2.7/dist-packages/gtk-2.0/pangocairo.so /usr/lib/python2.7/dist-packages/gtk-2.0/pangocairo.so: ELF 64-bit LSB shared object, x86-64, version 1 (SYSV), dynamically linked, BuildID[sha1]=0xe807ac0ccf8534a420d04777b8f229c0b8e18c56, stripped ..................... open("/usr/lib/python2.7/dist-packages/gtk-2.0/pango.so", O_RDONLY) = 9 fstat(9, {st_mode=S_IFREG|0644, st_size=171008, ...}) = 0 ....................... open("/usr/lib/python2.7/dist-packages/gtk-2.0/pangocairo.so", O_RDONLY|O_CLOEXEC) = 10 read(10, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0P\36\0\0\0\0\0\0"..., 832) = 832 fstat(10, {st_mode=S_IFREG|0644, st_size=20352, ...}) = 0 mmap(NULL, 2115592, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 10, 0) = 0x7fcbb99a6000 mprotect(0x7fcbb99aa000, 2093056, PROT_NONE) = 0 mmap(0x7fcbb9ba9000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 10, 0x3000) = 0x7fcbb9ba9000 close(10) = 0 mprotect(0x7fcbb9ba9000, 4096, PROT_READ) = 0 close(9) = 0 open("/usr/lib/x86_64-linux-gnu/gconv/gconv-modules.cache", O_RDONLY) = 9 fstat(9, {st_mode=S_IFREG|0644, st_size=26258, ...}) = 0 mmap(NULL, 26258, PROT_READ, MAP_SHARED, 9, 0) = 0x7fcbc7fbd000 close(9) = 0 futex(0x7fcbc6c54b10, FUTEX_WAKE_PRIVATE, 2147483647) = 0 write(2, "\n** (python:17514): CRITICAL **:"..., 88 ** (python:17514): CRITICAL **: pyg_register_boxed: assertion `boxed_type != 0' failed ) = 88 --- SIGSEGV (Segmentation fault) @ 0 (0) --- +++ killed by SIGSEGV (core dumped) +++ Segmentation fault (core dumped) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1003751 Title: pygtk's pangocairo module crashes pydoc search To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pygtk/+bug/1003751/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs