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```import numpy as np
import matplotlib.pyplot as plt
from mpl_toolkits.mplot3d import Axes3D

def loft_between_polylines(polyline1, polyline2):
if len(polyline1) != len(polyline2):
raise ValueError("Both polylines must have the same number of vertices")

num_vertices = len(polyline1)

# Convert the vertices to numpy arrays for easier manipulation
polyline1 = np.array(polyline1)
polyline2 = np.array(polyline2)

# Create a parameter that goes from 0 to 1
t = np.linspace(0, 1, num_vertices)

# Interpolate between the two polylines using the parameter t
interpolated_vertices = (1 - t[:, np.newaxis]) * polyline1 + t[:, np.newaxis] * polyline2

return interpolated_vertices

# Define two example polylines as lists of vertices
polyline1 = [(0, 0, 0), (1, 2, 1), (2, 3, 2), (3, 2, 3)]
polyline2 = [(0, 0, 5), (1, 1, 6), (2, 2, 7), (3, 3, 8)]

# Perform lofting between the polylines
interpolated_vertices = loft_between_polylines(polyline1, polyline2)

# Plot the result in 3D
fig = plt.figure()