Python novice here. Caveat emptor. Since all python input is read in as a string, you could try checking to see if the value is a digit with the .isdigit string method. e.g. if userinput.isdigit(): #do stuff else #more stuff
http://stackoverflow.com/questions/5424716/python-how-to-check-if-input-is-a-number-given-that-input-always-returns-stri http://docs.python.org/library/stdtypes.html On Sat, May 5, 2012 at 1:08 PM, Emile van Sebille <em...@fenx.com> wrote: > On 5/5/2012 11:01 AM Santosh Kumar said... > >> I am reading the documentation and I'm in the section 4.1. Let me >> write it down here: > > > You'll need to peek ahead to section 8 Errors and Exceptions. > > Try and see if that doesn't get you going. > > Emile > > > > >> >>>>> x = int(input("Please enter an integer: ")) >> >> Please enter an integer: 42 >>>>> >>>>> if x< 0: >> >> ... x = 0 >> ... print('Negative changed to zero') >> ... elif x == 0: >> ... print('Zero') >> ... elif x == 1: >> ... print('Single') >> ... else: >> ... print('More') >> ... >> More >> >> Now I want to add a filter in this script, I want when a user enter a >> string here it give a warning "Please enter a number like 0 or 2". >> _______________________________________________ >> Tutor maillist - Tutor@python.org >> To unsubscribe or change subscription options: >> http://mail.python.org/mailman/listinfo/tutor >> > > > _______________________________________________ > Tutor maillist - Tutor@python.org > To unsubscribe or change subscription options: > http://mail.python.org/mailman/listinfo/tutor _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
