报错:
DeprecationWarning: time.clock has been deprecated in Python 3.3 and will be removed from Python 3.8: use time.perf_counter or time.process_time instead
clock使用:
from time import clock
def timer(f):
def _f(*args):
t0 = clock()
f(*args)
return clock() - t0
return _f
应用:
#定义100000000个都为5的元素
x = [5] * 100000000
print(x[0])
print(x[99999999])
print(len(x))
#定义一个方法删除指定位置的元素
def delete_elem(x, index):
del x[index]
timer(delete_elem)(x,-1)
timer(delete_elem)(x,0)
结果:
提倡的新方法:
perf_counter使用方法:
from time import perf_counter
def timer_2(f):
def _f(*args):
t0 = perf_counter()
f(*args)
return perf_counter() - t0
return _f
应用:
timer_2(delete_elem)(x,-1)
timer_2(delete_elem)(x,0)
结果:
process_time使用方法:
from time import process_time
def timer_3(f):
def _f(*args):
t0 = process_time()
f(*args)
return process_time() - t0
return _f
应用:
timer_3(delete_elem)(x,-1)
timer_3(delete_elem)(x,0)
结果: