Question

就像那样

try: 
    1/0
    print "hello world"
    print "every thing seems fine..."

except ZeroDivisionError: 
    print "It is not a critical error, go to next..."
    SomeWayAllowMeToExeutePrintHelloWorld_TheLineNextToTheRaisedLine()

except: 
    print "I have no idea, just stop work..."

[1/0]引发后，[除ZeroDivisionError]捕获错误，然后返回[print“hello world”]行，继续......

Answer 1

你不能，也没有理由你想要：

try: 
    1/0
except ZeroDivisionError:
    print "It is not a critical error, go to next..."

print "hello world"
print "every thing seems fine..."

考虑以下代码：

try: 
    important_res = f(1/0)
    send_important_message(important_res)
except ZeroDivisionError: 
    print "It is not a critical error, go to next..."
    SomeWayAllowMeToExeutePrintHelloWorld_TheLineNextToTheRaisedLine()

如果您允许继续执行，您如何选择要传递给f的值？

Answer 2

没有。当引发异常时，它总是进入捕获它的块。如果要返回导致异常的行之后的行，则应立即处理异常，然后在处理异常的代码下面放置该行。

Answer 3

没有。实现您想要的方法是使用两个try语句：

try:
    try: 
        1/0
    except ZeroDivisionError: 
        print "It is not a critical error, go to next..."

    print "hello world"
    print "every thing seems fine..."
except: 
    print "I have no idea, just stop work..."

Answer 4

您可以将打印行放在 try ... except 语句之后，并对第二个使用第二个 try ... except 语句，但< / em>的

try: try: 1/0 except ZeroDivisionError: print "It is not a critical error, go to next..." except: print "I have no idea, just stop work..." print "hello world" print "every thing seems fine..."

通过，在第二个除的情况下，如果你只想停止程序，你不应该捕获异常。

Answer 5

你不能没有特别提到你想要捕捉错误的地方以及不需要捕获的内容。

执行上述操作后，您可以添加finally:代码块：

try:
    1/0
except ZeroDivisionError:
    print "error"
finally:
    print "hello world"
    print "every thing seems fine..."

Answer 6

此处try/except子句的正确用法是使用else或finally或两者，正如其他答案所示。

但是，你也可以重构你的代码，这样尝试的每一步都是它自己的功能，然后使用循环很好地把它们放在一起。

示例：

steps = [step1, step2, step3] # pointers to function/methods

for step in steps:
    try:
        step()
    except Exception as exc:
        # handle the exception

在你的代码上：

def step1():
    1/0

def step2():
    print "hello world"

def step3():
    print "every thing seems fine..."

steps = [step1, step2, step3]

for step in steps:
    try:
        step()
    except ZeroDivisionError:
        print "It is not a critical error, go to next..."
    except:
        print "I have no idea, just stop work..."

结果：

>>> 
It is not a critical error, go to next...
hello world
every thing seems fine...

python可以忽略错误并返回到凸起行旁边的行并继续

6 个答案: