Paths for -i and -o other than ./ don't work. I always get errors like
File "src/lxml/parser.pxi", line 1782, in lxml.etree._parseDocument (src/lxml/lxml.etree.c:124012)
File "src/lxml/parser.pxi", line 1808, in lxml.etree._parseDocumentFromURL (src/lxml/lxml.etree.c:124381)
File "src/lxml/parser.pxi", line 1712, in lxml.etree._parseDocFromFile (src/lxml/lxml.etree.c:123176)
File "src/lxml/parser.pxi", line 1115, in lxml.etree._BaseParser._parseDocFromFile (src/lxml/lxml.etree.c:117540)
File "src/lxml/parser.pxi", line 573, in lxml.etree._ParserContext._handleParseResultDoc (src/lxml/lxml.etree.c:110517)
File "src/lxml/parser.pxi", line 683, in lxml.etree._handleParseResult (src/lxml/lxml.etree.c:112283)
File "src/lxml/parser.pxi", line 611, in lxml.etree._raiseParseError (src/lxml/lxml.etree.c:111085)
IOError: Error reading file './path/somefile.gml': failed to load external entity "./path/somefile.gml"
Paths for -i and -o other than ./ don't work. I always get errors like