一、
from datetime import datetime now = datetime.now() print(now) print(now.hour) print(now.day)
二、#(1)
a=list(range(10)) b=list(range(0,100,10)) c=[] for i in range(len(a)): c.append(a[i]**2+b[i]) print(a,b,c)
import numpy a=numpy.arange(10) b=numpy.arange(0,100,10) c=a+b print(a,b,c)
#(3)
def Sum(n): a=list(range(n)) b=list(range(0,5*n,5)) c=[] for i in range(len(a)): c.append(a[i]**2+b[i]**3) return(c) print(Sum(10)) def npSum(n): a=list(range(n)) b=list(range(0,5*n,5)) c=[] for i in range(len(a)): c.append(a[i]**2+b[i]**3) return(c) print(Sum(10)) from datetime import datetime start = datetime.now() Sum(2000000) delta=datetime.now()-start print(delta) start= datetime.now() npSum(2000000) delta=datetime.now()-start print(delta)
三、
原文:https://www.cnblogs.com/Herman-mai/p/9829121.html