how to make a graph in matplotlib in python code example

Example 1: python 2d graph

names = ['group_a', 'group_b', 'group_c']
values = [1, 10, 100]

plt.figure(figsize=(9, 3))

plt.subplot(131)
plt.bar(names, values)
plt.subplot(132)
plt.scatter(names, values)
plt.subplot(133)
plt.plot(names, values)
plt.suptitle('Categorical Plotting')
plt.show()

Example 2: forming straight lines graphs in python 3 using selection

forming straight lines graphs in python 3 using selection