Divide By Zero Error In Python
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you have probably seen some. There are (at least) two distinguishable kinds of errors: syntax errors and exceptions. 8.1. Syntax Errors¶ Syntax errors, also known as parsing errors,
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are perhaps the most common kind of complaint you get while you are python divide by zero check still learning Python: >>> while True print 'Hello world' File "
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(or at least detected at) the token preceding the arrow: in the example, the error is detected at the keyword print, since a colon (':') is missing before it. File name and line number are printed so you know where to look in case the input came from a script. 8.2. Exceptions¶ Even if a statement or expression is syntactically correct, it may
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cause an error when an attempt is made to execute it. Errors detected during execution are called exceptions and are not unconditionally fatal: you will soon learn how to handle them in Python programs. Most exceptions are not handled by programs, however, and result in error messages as shown here: >>> 10 * (1/0) Traceback (most recent call last): File "
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Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join divide by zero error encountered. in sql server them; it only takes a minute: Sign up Python Divide By Zero Error up vote 1 down vote favorite I have a Class in python, with the following attributes: self.number1 = 0 self.number2 = 0 self.divided = self.number1/self.number2 This https://docs.python.org/2/tutorial/errors.html of course throws up the zero error: ZeroDivisionError: integer division or modulo by zero The idea is that I will increment number1 and number2 later on, but will self.divided be automatically updated? If it is auto updated then how do I get around the zero error? Thanks. python divide-by-zero share|improve this question asked Nov 30 '12 at 13:36 user578582 318621 1 No, it won't be updated –applicative_functor Nov 30 '12 at 13:38 add a comment| 2 Answers http://stackoverflow.com/questions/13646347/python-divide-by-zero-error 2 active oldest votes up vote 12 down vote accepted No, self.divided is a simple attribute and will not automatically update. For dynamic attributes, use a property instead: class Foo(object): number1 = 0 number2 = 0 @property def divided(self): return self.number1 / self.number2 share|improve this answer answered Nov 30 '12 at 13:38 Martijn Pieters♦ 498k7412891448 1 You could also use the shorter version divided = property(lambda obj: obj.number1 / obj.number2) –Fabian Nov 30 '12 at 13:39 4 @Fabian: and then I have to explain lambdas too. Let's keep this simple. :-) –Martijn Pieters♦ Nov 30 '12 at 13:40 1 now you could argue that you have to explain decorators too :-) –Fabian Nov 30 '12 at 13:42 @Fabian: let's hope the OP has the nouse to read the linked documentation then! –Martijn Pieters♦ Nov 30 '12 at 13:43 @Fabian Which is far, far less readable. –Gareth Latty Nov 30 '12 at 13:44 | show 7 more comments up vote 7 down vote Automatic update with avoidance of ZeroDivisionError: @property def divided(self): try: #suppose that number2 is a float return self.number1/self.number2 except ZeroDivisionError: return None share|improve this answer edited Nov 30 '12 at 13:47 answered Nov 30 '12 at 13:41 jojo 1,3321927 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using Google Sign up using Facebook Sign up usin
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us http://stackoverflow.com/questions/22085864/python-divide-by-0-error Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Python Divide by 0 Error up vote divide by -4 down vote favorite I am currently using this Python code: valid_chars = "0123456789-+/* \n"; while True: x = "x=" y = input(" >> ") x += y if False in [c in valid_chars for c in y]: print("WARNING: Invalid Equation"); continue; if(y == "end"): break exec(x) print(x) It crashes when the user does something like this: 9/0. Error: ZeroDivisionError: division by zero What are some ways divide by zero that will prevent the user from dividing something by zero? python calculator share|improve this question edited Jun 9 '15 at 15:14 Eric Leschinski 46.3k23221190 asked Feb 28 '14 at 3:55 Dark Leviathan 381114 So this is Python 3, where input() just returns the string the user typed in, and you are trying to use exec() to evaluate the expression the user entered? Your messages should distinguish between the circumstances, otherwise you simply don't know which print statement is being executed. –holdenweb Feb 28 '14 at 4:53 I fixed that, but thanks for telling me –Dark Leviathan Feb 28 '14 at 4:58 The answers are now useless, and this whole thread is useless, and no one reading it in the future can benefit from it because you've taken the issue out of the question. Therefore, anyone who sees this in the future won't be able to know if the question is the same one they have. Please revert the question back to it's earlier state where your issue was more apparent. –JFA Mar 1 '14 at 20:23 add a comment| 3 Answers 3 active oldest votes up vote 6 down vote accepted You