python - Try and Except 初学者的简化

Question

有没有一种方法可以简化代码流程，使 busy = 0 和 print busy 不必出现两次？

busy = 1
try:
    print 1/0
    busy = 0
    print busy
except:    
    busy = 0
    print busy
    raise

Answer 1

你可以把它放在finally子句中:

try:
    print 1/0
except:
    raise
finally:
    busy = 0
    print busy

但是正如@Ryan 在评论中提到的那样，现在您在 except: 子句中得到了一些无用的代码。所以你可以这样做:

try:
    print 1/0
finally:
    busy = 0
    print busy