flake8 whitepace, indents, var names

address:

B007 Loop control variable 'id' not used within the loop body. If this is intended, start the name with an underscore.
E122 continuation line missing indentation or outdented
E127 continuation line over-indented for visual indent
E128 continuation line under-indented for visual indent
E129 visually indented line with same indent as next logical line
E701 multiple statements on one line (colon)
E703 statement ends with a semicolon
E741 ambiguous variable name 'l'

Author: rouilj