Comment 2 for bug 651265

Working with pdb at screen.py#540 line i found the xml crashing is this: http://bit.ly/c6jBJC from lxml-dev list support says:

attrs=\'{\'readonly\':[(\'state\',\'=\',\'valid\')]}\'

should maybe be

attrs="\'{\'readonly\':[(\'state\',\'=\',\'valid\')]}\'"

i want to confirm if thats created in account/account_move_line.py#950 line

 attrs.append("attrs='{'readonly':[('state','=','valid')]}'") if yes it must fixed