I would like to draw multiple independent lines in a 3D plot in Python. It looks like: 
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我是 Python 新手。你能帮我吗？
您必须使用 matplotlib 库（mplot3d包裹）。
这是一个带有线条的 3dr 图的小示例：
import matplotlib as mpl
from mpl_toolkits.mplot3d import Axes3D
import numpy as np
import matplotlib.pyplot as plt
# make 3d axes
fig = plt.figure()
ax = fig.gca(projection='3d')
# test data
x = np.arange(-1., 1., .1)
y = np.arange(-1., 1., .1)
z1 = x + y
z2 = x * x
z3 = -y * y
# plot test data
ax.plot(x, y, z1)
ax.plot(x, y, z2)
ax.plot(x, y, z3)
# make labels
ax.set_xlabel('X')
ax.set_ylabel('Y')
ax.set_zlabel('Z')
plt.show()
