modified import library

Author: Hideto Mori

patchworklib/patchworklib.py

@@ -15,14 +15,14 @@
 import matplotlib.font_manager as fm
 import matplotlib.pyplot as plt  
 import matplotlib.axes as axes
-import plotnine
 
 from contextlib import suppress
 from types import SimpleNamespace as NS
 from matplotlib.offsetbox import AnchoredOffsetbox
 from matplotlib.transforms import Bbox, TransformedBbox, Affine2D
 
 try:
+    import plotnine
     import patchworklib.modified_plotnine as mp9
 except Exception as e:
     pass