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python : How to continue execution inside a try statement after an exception stop it

2025年05月04日11softidea

在我的应用程序中,我正在从文件中加载一些数据。这可能会失败并引发异常。因此,我想记录警告并继续加载下一个数据。

我就是这样做的:

try: 
    data_A = getDefaultConf(param_1,param_2) 
except Exception as e: 
    log(WARNING, "Failed to get default parametres: "+str(e)) 
try: 
    data_B = getDefaultConf(param_1,param_3) 
except Exception as e: 
    log(WARNING, "Failed to get default parametres: "+str(e)) 
try: 
    data_C = getDefaultConf(param_4,param_5) 
except Exception as e: 
    log(WARNING, "Failed to get default parametres: "+str(e)) 
try: 
    data_D = getDefaultConf(param_4,param_6) 
except Exception as e: 
    log(WARNING, "Failed to get default parametres: "+str(e)) 
try: 
    data_E = getDefaultConf(param_4,param_7) 
except Exception as e: 
    log(WARNING, "Failed to get default parametres: "+str(e)) 

它可以工作,但看起来很重。所以,我的问题是:是否存在一种使它更轻的方法? 它可能是这样工作的:

try: 
    data_A = getDefaultConf(param_1,param_2) 
    data_B = getDefaultConf(param_1,param_3) 
    data_C = getDefaultConf(param_4,param_5) 
    data_D = getDefaultConf(param_4,param_6) 
    data_E = getDefaultConf(param_4,param_7) 
except Exception as e: 
    log(WARNING, "Failed to get default parametres: "+str(e)) 
    # Here something that could work like a "continue" statement so that if loading of 
    #  data_2 fails it will store the log and continue by trying to load data_3, etc. 

我曾在其他帖子中看到一些建议将其放入循环中的答案,但是,管理我的参数会不会更重?

我正在以这种方式等待任何建议。无论如何,我的代码都能正常工作。所以,这只是对一个问题的好奇心问题,这个问题也可以帮助其他程序员......

请您参考如下方法:

在这种情况下,我可能会引入一个新函数(假设您不能或不想更改现有的 getDefaultConf):

def getDefault(x, y): 
    try: 
        return getDefaultConf(x,y) 
    except Exception as e: 
        log(WARNING, "Failed to get default parametres: "+str(e)) 
    return None 
 
data_A = getDefault(param_1,param_2) 
data_B = getDefault(param_1,param_3) 
data_C = getDefault(param_4,param_5) 
data_D = getDefault(param_4,param_6) 
data_E = getDefault(param_4,param_7) 

此处唯一的区别是对于导致异常的调用,您将返回 None。这可能会或可能不会被您的应用程序接受。