Python Raw_input Error Checking
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Python Raise Valueerror
integer is entered.: if a.isdigit == False: raw_input("Try again: ") python error-handling share|improve this question edited Jan 20 '11 at 1:08 asked Jan 20 '11 at 1:02 super9 7,8892375142 my answer is no use for you i will delete it, if you want just positive numbers choose one of the answer that use isdigit() , hope i did help this time :) –mouad Jan 20 '11 at 2:15 I think my question was poorly worded that confused everyone -_-. Thanks for your help anyway! –super9 Jan 20 '11 at 2:19 add a comment| 4 Answers 4 active oldest votes up vote 2 down vote accepted The usual way to achieve this is to use int() with exception handling: >>> n = None >>> while n is None: ... a = raw_input("Enter a number: ") ... try: ... n = int(a) ... except ValueError: ... print "Not a number." ... Enter a number: abc Not a number. Enter a number: cauliflowers are my favourite vegetable Not a number. Enter a number: 12 >>> However if you would prefer to avoid
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An Exception Can Be In Python
Operator, Filter, Reduce and MapList ComprehensionGeneratorsException HandlingObject Oriented ProgrammingInheritance ExampleSlotsClasses and Class CreationRoad python raise custom exception to MetaclassesMetaclassesMetaclass Example: Count Function Calls Exception from the Rule "There are two great rules of life, the one name of errors in python general and the other particular. The first is that everyone can in the end, get what he wants, if he only tries. That is the general rule. The particular rule is that every http://stackoverflow.com/questions/4742483/help-with-error-handling-for-python individual is, more or less, an exception to the rule." Samuel Butler Delicate Handling "The finest qualities of our nature, like the bloom on fruits, can be preserved only by the most delicate handling. Yet we do not treat ourselves nor one another thus tenderly." Henry David Thoreau Supported by: Python Training Courses in Canada This topic in German / Deutsche Übersetzung: AusnahmebehandlungPython 2.7This tutorial http://www.python-course.eu/exception_handling.php deals with Python Version 2.7This chapter from our course is available in a version for Python3: Exception HandlingClassroom Training Courses This website contains a free and extensive online tutorial by Bernd Klein. If you are interested in an instructor-led classroom training in Canada or the US, you may have a look at the Python courses by Bernd Klein at Bodenseo © kabliczech - Fotolia.com Overview of Python courses by Bernd Klein. The Truth in Errors "The first step towards amendment is the recognition of error." Seneca "The world always makes the assumption that the exposure of an error is identical with the discovery of truth - that the error and truth are simply opposite. They are nothing of the sort. What the world turns to, when it is cured of one error, is usually simply another error, and maybe one worse than the first one." H.L. Mencken "Great services are not canceled by one act or by one single error." Benjamin Disraeli
Previous Chapter: Generators Next Chapter: Object Oriented Programming Exception Handling An exception is an error that happens during the execution of a program. Exceptions are known to non-programmers as instausing raw_input()? … my way of checking in python if the integer is … Are Free From Syntax Errors; I would like to read data from the user using Python. How do I read clause in python data using raw_input()? … my way of checking if the integer is … Are Free From Syntax Errors; I would like to read data from the user using Python. How do I read data using raw_input()? … my way of checking if the integer is … Are Free From Syntax Errors; Bookmark the permalink. Post navigation ← Resident Evil Afterlife Continuity Errors Sct Livewire Ts Error → Search Striker WordPress Theme Powered By WordPress