1、示例 1

import numpy as np
import matplotlib.pyplot as plt 

# 生成数据
v1 = np.random.randint(0, 13, 7)

plt.bar(list(range(7)), v1)

plt.show()

图形

2、pandas 绘图

import numpy as np
import pandas as pd
import matplotlib.pyplot as plt 

# 生成数据
y = np.random.randint(0, 13, 7)
y = pd.DataFrame(y, columns=['v'])

y.plot(kind='bar', color='k')

plt.show()

图形

 

 

。。。