Error appears If charset is in dot file.
C-function agget (from line176 from agraph.py) returns bytes, but it must be string.
And C-func agattrdefval (from line 1833) returns bytes too.
And I think the same returning is of C-func agattrdefval from line 1741.
Error appears If charset is in dot file. C-function agget (from line176 from agraph.py) returns bytes, but it must be string. And C-func agattrdefval (from line 1833) returns bytes too. And I think the same returning is of C-func agattrdefval from line 1741.