pycharm使用matplotlib.pyplot不显示图形的解决方法

# coding=utf-8
import pandas as pd
import matplotlib.pyplot as plt

data = pd.read_csv('ccpoints.csv', header=0)
plt.scatter(data.x, data.y, c="red", marker='o', label='ccpoints')
plt.xlabel('x')
plt.ylabel('y')
plt.legend(loc=2)
plt.show()
plt.savefig("one.png")

import matplotlib
matplotlib.use('TkAgg')

import matplotlib
matplotlib.use('Agg')