Python画图曲线图（加网格）

代码示例：

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

method_path = "./results_org1.txt"
org = pd.read_csv(method_path, header=None)
method_path = "./results_exp1.txt"
exp = pd.read_csv(method_path, header=None)

epochs = list(range(1,len(org)+1))
plt.plot(epochs, org.loc[:,9],  label="org_data")
plt.plot(epochs, exp.loc[:,9],  label="exp_data")

plt.xlabel('epochs',fontsize=16)
plt.ylabel('percision',fontsize=16) 
plt.legend(loc=4,fontsize=16)
plt.title('Percision vs.epochs ',fontsize=16)
plt.grid(which='major', axis='x', linewidth=0.75, linestyle='-', color='0.75',dashes=(15, 10))
plt.grid(which='major', axis='y', linewidth=0.75, linestyle='-', color='0.75',dashes=(15, 10))
plt.show()

　　画图结果：