擅长:python、mysql、java
<p>差别很小,我们不能断定这是因为变量的名称。你知道吗</p>
<pre><code>import timeit
x=1
xyz=1
start_time = timeit.default_timer()
for i in range(1,1000000):
if x==1:
print("message")
elapsed = timeit.default_timer() - start_time
start_time2 = timeit.default_timer()
for i in range(1,1000000):
if xyz==1:
print("message")
elapsed2 = timeit.default_timer() - start_time2
print("small variable printing = ",str(elapsed),"big variable printing = "+str(elapsed2))
</code></pre>
<p>结果是:</p>
<pre><code>small variable printing = 3.6490847053481588 big variable printing = 3.7199463989460435
</code></pre>