python - 导入错误: No module named class_vis

Question

我错过了这件事吗？我在网上搜索了有关安装软件包的信息，尤其是 PrettyPicture，但没有任何信息。这个已经不用了吗？

import numpy 
import matplotlib
matplotlib.use('agg')
import matplotlib.pyplot as plt
#from studentRegression import studentReg
from class_vis import prettyPicture, output_image

from ages_networths import ageNetWorthData

ages_train, ages_test, net_worths_train, net_worths_test = ageNetWorthData()

reg=studentReg(ages_train,net_worths_train)

plt.clf()
plt.scatter(ages_train,net_worths_train,color="b",label="train data")
plt.scatter(ages_test, net_worths_test, color='r', label="test data")
plt.plot(ages_test, reg.predict(ages_test), color="black")
plt.legent(loc=2)
plt.xlabel("ages")
plt.ylabel("net worths")

plt.savefig("test.png")
output_image("test.png", "png", open("test.png", "rb").read())

错误消息:

ImportError                               Traceback (most recent call last)
<ipython-input-10-7e6ab2d3ca3d> in <module>()
      5 import matplotlib.pyplot as plt
      6 #from studentRegression import studentReg
----> 7 from class_vis import prettyPicture, output_image
      8 
      9 from ages_networths import ageNetWorthData

ImportError: No module named class_vis

Answer 1

class_vis.py 可用 here 。它来自:

ud120-项目

为参加 Udacity ud120 的学生提供的入门项目代码