python 一张图画多条线_python 实现将多条曲线画在一幅图上的方法

如下所示：

# -*- coding: utf-8 -*-

"""

Created on Thu Jun 07 09:17:40 2018

@author: yjp

"""

import matplotlib.pyplot as plt

import numpy as np

from matplotlib.ticker import MultipleLocator, FormatStrFormatter

y0 = []

y1 = []

y2 = []

y3 = []

y4 = []

f = open("y0.txt")

lines = f.readlines()

for li in lines:

y0.append(li)

f = open("y1.txt")

lines = f.readlines()

for li in lines:

y1.append(li)

f = open("y2.txt")

lines = f.readlines()

for li in lines:

y2.append(li)

f = open("y3.txt")

lines = f.readlines()

for li in lines:

y3.append(li)

f = open("y4.txt")

line