pep8 fix e225

Signed-off-by: Thomas Hisch <t.hisch@gmail.com>
e227 e228

Signed-off-by: Thomas Hisch <t.hisch@gmail.com>
made idle_event() in backend_bases.py return True
Merge pull request #3769 from ahaldane/master

BUG/API : made idle_event() in backend_bases.py return True
Merge pull request #3771 from thisch/pep8fix_e225_e227_e228

PEP8 : [examples] fix pep8 error classes e225, e227 and e228
fix trailing whitespace
fix multiple whitespace issues in svg_*.py examples (E293, E291)
pep8 fix E201
pep8 fix e2* in examples dir part 1/2
pep8 fix e2* in examples dir part 2/2

Signed-off-by: Thomas Hisch <t.hisch@gmail.com>
pep8 fix E701
pep8 fix E502 (redundant backslash)
pep8 fix e702,e703
pep8 fix E302
remove blacklisted examples from coding style unittest

Signed-off-by: Thomas Hisch <t.hisch@gmail.com>
ignore line to long errors for pep8 unit tests in examples/
pep8 fix E124-E129

Signed-off-by: Thomas Hisch <t.hisch@gmail.com>
pep fix E401
fix all issues in the output of the pep8 unit test