os.rename（）在Python中的时间

Question

I'm building a script that renames some files to determine if the file is locked or not. The script does the following on every file in a given directory recursively.

try: 
    os.rename(source, temp)
    os.rename(temp, source)
except OSError as e:
    print 'exception'

My question is should there be a time.sleep(1) between the os.rename() calls? I'm worried the file might not be renamed by the time the other os.rename() call takes place, but I want it to run as fast as possible.

Thanks for any help.

Answer 1

否，因为这些命令都被阻止了。

Answer 2

The second os.rename() will be call only when the first will have finished (principle of blocking command). So you don't have to worry about the time of execution.