fixed visual indentation errors
fix indentation errors
use spaces in indentation
fix indentation
fix E501: line too long
fixed indentation and visual indentation errors
fixed visual indentation errors
fixed indentation and visual indentation errors
fix for 'line too long' warning
pep8 fixes
fix indentation and convert tabs to spaces
fix indentation
fix too many blank lines
fix visual indent
add expected blank line
fix line endings and visual indents
fix visual indentation
fix visual indentation
removed unused import from example
Merge pull request #2410 from Balu-Varanasi/pep8_fixes

Pep8 fixes