file.write(str(round(x1,1))?+?','?+?str(round(x2,1))?+?','?+?str(round(x3,1))?+?','?+?str(round(y,1))?+?'\n')
保留1位小數(shù)，要不出來的數(shù)據(jù)，都是一大串小數(shù)。

import?randomdef?Y(X1,?X2,?X3):?return?0.65?*?X1?+?0.70?*?X2?-?0.55?*?X3?+?1.95def?Produce():?filename?=?'data.csv'?with?open(filename,?'w')?as?file:??file.write('X1,X2,X3,Y\n')??for?i?in?range(200):???random.seed()???x1?=?random.random()?*?10???x2?=?random.random()?*?10???x3?=?random.random()?*?10???y?=?Y(x1,?x2,?x3)???try:????file.write(str(x1)?+?','?+?str(x2)?+?','?+?str(x3)?+?','?+?str(y)?+?'\n')???except?Exception?as?e:????print?('Write?Error')????print?(str(e))?Produce()

1. import random

2. def Y(X1, X2, X3):

3. return 0.65 * X1 + 0.70 * X2 - 0.55 * X3 + 1.95

4. def Produce():

5. filename = 'data.csv'

6. with open(filename, 'w') as file:

7. file.write('X1,X2,X3,Y\n')

8. for i in range(200):

9. random.seed()

10. x1 = random.random() * 10

11. x2 = random.random() * 10

12. x3 = random.random() * 10

13. y = Y(x1, x2, x3)

14. try:

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

16. except Exception as e:

17. print ('Write Error')

18. print (str(e))

19. Produce()

既然沒人回答，我只好自己寫了一個(gè)程序來生成數(shù)據(jù)了。

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('X1,X2,X3,Y\n')
??for?i?in?range(200):
???random.seed()
???x1?=?random.random()?*?10
???x2?=?random.random()?*?10
???x3?=?random.random()?*?10
???y?=?Y(x1,?x2,?x3)
???try:
????file.write(str(x1)?+?','?+?str(x2)?+?','?+?str(x3)?+?','?+?str(y)?+?'\n')
???except?Exception,?e:
????print?'Write?Error'
????print?str(e)
if?__name__?==?'__main__':
?Produce()