擅长:python、mysql、java
<p>使用<code>os.path</code>模块怎么样</p>
<pre><code>from os import path
if path.exists(my_filepath):
execute_my_program()
</code></pre>
<p>您可以添加睡眠:</p>
<pre><code>from os import path
from time import sleep
def wait_and_process_file(filepath, wait_interval=5, max_time=3600):
total_time = 0
while total_time < max_time and not path.exists(filepath):
sleep(wait_interval)
total_time += wait_interval
_finish_processing(filepath)
</code></pre>