episode padding not working

[Zillur]

Simple test case -

from mapi.metadata import MetadataTelevision

meta = MetadataTelevision(
    media='television',
    series='adventure time',
    season=5,
    episode=3,
    title='Five More Short Graybles'
)

print(meta.format('<$series>-<S$season><E$episode>-<$title>'))

Result - Adventure Time-S05E3-Five More Short Graybles

Expected result - Adventure Time-S05E03-Five More Short Graybles