fix lints

Author: ocefpaf

tests/test_repr.py

@@ -8,8 +8,8 @@
 
 from __future__ import (absolute_import, division, print_function)
 
-import sys
 import io
+import sys
 
 import PIL.Image
 
@@ -27,6 +27,7 @@ def m():
 def m_png():
     yield folium.Map(png_enabled=True)
 
+
 def test__repr_html_is_str(m):
     html = m._repr_html_()
     assert isinstance(html, str)