csvファイルをmatplotlibで描画するまで

csv2graph.py

import csv
import matplotlib.pyplot as plt

f = open("data.csv", "r")

data = csv.reader(f)

x = []
y0 = []
y1 = []
y2 = []

for row in data:
	x.append(int(row[0]))
	y0.append(int(row[1]))
	y1.append(int(row[2]))
	y2.append(int(row[3]))

plt.title("data")
plt.xlabel("x")
plt.ylabel("y")
plt.plot(x,y0, label="y=x")
plt.plot(x,y1,label="y=x^2")
# plt.plot(x,y2,label="y=x^3")
plt.legend()
plt.show()