import matplotlib.pyplot as plt
import matplotlib.patches as mpatches
from matplotlib.collections import PatchCollection

n = 6

patches = [mpatches.RegularPolygon((0,0), n)]
fig, ax = plt.subplots()
collection = PatchCollection(patches)
ax.add_collection(collection)
plt.axis('equal')
plt.axis('off')
plt.tight_layout()
plt.show()