from .find_contours import find_contours
from ._regionprops import regionprops, perimeter
from ._structural_similarity import structural_similarity
from ._polygon import approximate_polygon, subdivide_polygon
from .find_contours import find_contours
from ._regionprops import regionprops, perimeter
from ._structural_similarity import structural_similarity
from ._polygon import approximate_polygon, subdivide_polygon

__all__ = ['find_contours',
           'regionprops',
           'perimeter',
           'structural_similarity',
           'approximate_polygon',
           'subdivide_polygon']

Add __all__ to measure package