python array 使用创建10万浮点数

from array import array
from random

floats = array('d',random((for i in range(10**7))

fp = open('floats.bin','wb')
floats.tofile(fp)
fp.close()

floats2 = array('d')
fp1 = open('floats.bin','rb')
floats2.fromfile(fp1,10**7)
fp1.close()