svg_tetraflexagon_editor.py: fix coding style
authorAntonio Ospite <ao2@ao2.it>
Wed, 27 Jun 2018 14:08:15 +0000 (16:08 +0200)
committerAntonio Ospite <ao2@ao2.it>
Thu, 28 Jun 2018 14:34:52 +0000 (16:34 +0200)
commita0b453d3007220ba4e509db8c0bcbb09faf1d10d
treeb3e194ca79a6e892396f400aa5706cfb7b3e7574
parent3143f02f27e92c9d3475485e706bce8ffd73b6b3
svg_tetraflexagon_editor.py: fix coding style

Add an expected blank line between a class and a function, reported by
pycodestyle:

  $ pycodestyle svg_tetraflexagon_editor.py
  svg_tetraflexagon_editor.py:117:1: E302 expected 2 blank lines, found 1
src/svg_tetraflexagon_editor.py