Python Divide By Zero Error
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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 6.2 million python zerodivisionerror programmers, just like you, helping each other. Join 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 of course throws up the zero error: ZeroDivisionError: integer numpy divide by zero 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 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♦ 502k7513181474 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 Piet
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Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just like you, helping each other. Join them; it only takes a minute: http://stackoverflow.com/questions/13646347/python-divide-by-zero-error Sign up How to get NaN when I divide by zero up vote 27 down vote favorite 7 When I do floating point division in Python, if I divide by zero, I get an exception: >>> 1.0/0.0 Traceback (most recent call last): File "
Pages Local Site Map ------------------------ Rename Page Delete Page ------------------------ ------------------------ Remove Spam Revert to this revision ------------------------ SlideShow User Login Handling Exceptions The simplest way to handle exceptions is with a "try-except" block: 1 (x,y) = (5,0) 2 try: 3 z = x/y 4 except ZeroDivisionError: 5 print "divide https://wiki.python.org/moin/HandlingExceptions by zero" If you wanted to examine the exception from code, you could have: https://www.daniweb.com/programming/software-development/threads/456844/divide-by-zero-error-in-python 1 (x,y) = (5,0) 2 try: 3 z = x/y 4 except ZeroDivisionError as e: 5 z = e # representation: " Error: %s
sys.stdout=open('f1.txt','w') from collections import Counter from glob import glob def removegarbage(text): text=re.sub(r'\W+',' ',text) text=text.lower() return text folderpath='d:/induvidual-articles' counter=Counter() filepaths = glob(os.path.join(folderpath,'*.txt')) num_files = len(filepaths) with open('topics.txt','r') as filehandle: lines = filehandle.read() words = removegarbage(lines).split() counter.update(words) for word, count in counter.most_common(): probability=count//num_files print('{} {} {}'.format(word,count,probability)) i am getting a zero division error:float division by zero for the line probability=count//num_files how do i rectify it? i need my output to be of the form: word, count ,probability Plz help! python python3 farhaana.ahmed.58 2 posts since Jun 2013 Newbie Member 2Contributors 1Reply 16Views 3 YearsDiscussion Span 3 Years Ago Last Post by slate 0 slate 228 3 Years Ago You get zerodivision error if num_files == 0. It is impossible to find any word in nonexistent files, so the probability should be zero. So you should write (and see next point)probability=count/num_files if numfiles else 0 // is integer division in python. you should: python3: probability=count/num_files python2 or 3: probability=float(count)/num_files see This question has already been answered. Start a new discussion instead. Message Insert Code Snippet Alt+I Code Inline Code Link H1 H2 Preview Submit your Reply Alt+S Ask a Different Software Development Question Related Articles Java: Void does not display the input value 1 reply Java Hi when I tried to insert my output the void displayed null or 0 can you tell me what's wrong with my rpogram? tnx … Library management system 6 replies hey guys i am trying to create a library management system which is supposed to be used to store/keep infp for the library and the … Empty path name is not legal 1 reply Try Dim cn As New SqlConnection("Data Source=MSR\LOCAL;Initial Catalog=Eventena;Integrated Security=True") cn.Open() Using cmd As New SqlClient.SqlCommand("INSERT into BirthdayRegistration where Name='" & TextBox4.Text & "',LastName='" & TextBox2.Text … Alternate Color In MsFlexGrid ; coding 1 reply Hi, I want to create a Alternate Coloring in MsFlexGrid that using the Visual Basic Programming. Here I attach a source code : MsFlexGrid I … Getting garbage integer when printing out pointer array after addition 3 replies I