Setting an attribute value in XML file using ElementTree
问题 I need to change the value of an attribute named approved-by in an xml file from 'no' to 'yes'. Here is my xml file: <?xml version="1.0" encoding="UTF-8" ?> <!--Arbortext, Inc., 1988-2008, v.4002--> <!DOCTYPE doc PUBLIC "-//MYCOMPANY//DTD XSEIF 1/FAD 110 05 R5//EN" "XSEIF_R5.dtd"> <doc version="XSEIF R5" xmlns="urn:x-mycompany:r2:reg-doc:1551-fad.110.05:en:*"> <meta-data> <?Pub Dtl?> <confidentiality class="mycompany-internal" /> <doc-name>INSTRUCTIONS</doc-name> <doc-id> <doc-no type=