각 예외는 일부 클래스의 인스턴스입니다. 이러한 인스턴스는 다양한 방법으로 발생하고 포착될 수 있으므로 프로그램이 오류를 포착하고 처리할 수 있습니다.
>>> 1/0 Traceback (most recent call last): File "<pyshell#0>", line 1, in <module> 1/0 ZeropisionError: integer pision or modulo by zero
예외를 포착하려면 try/Exception 문을 사용할 수 있습니다.
>>> def inputnum(): x=input('Enter the first number: ') y=input('Enter the first number: ') try: print x/y except ZeroDivisionError: print "The second number can't be zero" >>> inputnum() Enter the first number: 10 Enter the first number: 0 The second number can't be zero
트리거 예외 발생
>>> class Muff: muffled=False def calc(self,expr): try: return eval(expr) except ZeroDivisionError: if self.muffled: print 'Division by zero is illegal' else: raise >>> c=Muff() >>> c.calc(10/2) Traceback (most recent call last): File "<pyshell#33>", line 1, in <module> c.calc(10/2) File "<pyshell#31>", line 5, in calc return eval(expr) TypeError: eval() arg 1 must be a string or code object >>> c.calc('10/2') >>> c.calc('1/0') Traceback (most recent call last): File "<pyshell#35>", line 1, in <module> c.calc('1/0') File "<pyshell#31>", line 5, in calc return eval(expr) File "<string>", line 1, in <module> ZeroDivisionError: integer pision or modulo by zero >>> c.muffled=True >>> c.calc('1/0') Division by zero is illegal
여러 예외 유형
try: x=input('Enter the first number:') y=input('Enter the seconed number:') print x/y except ZeroDivisionError: print "The second number can't be zero!" except TypeError: print "That wasn't a number,was it?"
동시에 여러 개 잡기 time Exception
try: x=input('Enter the first number:') y=input('Enter the seconed number:') print x/y except(ZeroDivisionError,TypeError,NameError): print 'Your numbers were bogus...'
catchobject
try: x=input('Enter the first number:') y=input('Enter the seconed number:') print x/y except(ZeroDivisionError,TypeError),e: print e Enter the first number:1 Enter the seconed number:0 integer pision or modulo by zero
모든 예외 catch
try: x=input('Enter the first number:') y=input('Enter the seconed number:') print x/y except: print 'something wrong happened...' Enter the first number: something wrong happened...
위 내용은 Python의 예외에 대한 자세한 설명의 상세 내용입니다. 자세한 내용은 PHP 중국어 웹사이트의 기타 관련 기사를 참조하세요!