最后還需要執(zhí)行一下（這是在cmd中）

》》》python "D:\Python\demo1.py"

*******************************

import random

def Y(X1, X2, X3):

?return 0.65 * X1 + 0.70 * X2 - 0.55 * X3 + 1.95

def Produce():

?filename = 'data.csv'

?with open(filename, 'w') as file:

? file.write('Unnamed: 0,Y,X1,X2,X3\n')

? for i in range(150):

? ?random.seed()

? ?x1 = random.random() * 10

? ?x2 = random.random() * 10

? ?x3 = random.random() * 10

? ?y = Y(x1, x2, x3)

? ?try:

? ? file.write(str(i)+','+ str(y)+ ',' +str(x1) + ',' + str(x2) + ',' + str(x3)? + '\n')

? ?except Exception as e:

? ? print ('Write Error')

? ? print (str(e))

Produce()

***********************