Fix below errors
E128 continuation line under-indented for visual indent
E305 expected 2 blank lines after class or function definition, found 1
E502 the backslash is redundant between brackets
E722 do not use bare except'
E741 ambiguous variable name 'xxxxx'
E999 SyntaxError: invalid token
Change-Id: Ic826a70aed2cda984cbafedae154c4812bfa37b5
Story: 2003429
Task: 24624
Signed-off-by: Sun Austin <austin.sun@intel.com>