Print all of prime number within 100
import math
import datetime
start = datetime.datetime.now()
lst0=[]
for i in range(2,100):
for j in lst0:
if i % j == 0:
break
if j > math.sqrt(i):
lst0.append(i)
break
else:
lst0.append(i)
end = datetime.datetime.now()
delta =end-start
print(len(lst0))
#print(lst0)
print(delta.seconds)
