Hi: Thank you very much for the detailed reply. My problem is I know I am doing the indentation wrong; but I cannot get it right in IDLE.
Could you take a look at this please: >>> x=3 >>> if x==0: print "x is 0" >>> elif x&1==1: SyntaxError: invalid syntax See, the moment I am pressing Enter the >>> is coming.. not ... I am using IDLE on Mac; and this is driving me crazy! :) I can get the result if I combine the if and print statements in one line.. but I really want to know what is going on. On Wed, Aug 11, 2010 at 1:22 AM, Dipo Elegbede <delegb...@dudupay.com>wrote: > You need to check the indentation properly. > In this case, elif has to be on the same indentation level with if. I > should think so. > If you're working straight from the python interactive console, like I > think you're doing, you need to manually do the indentation thing by > yourself. > First, I don't understand why you chose to set x to 3. That is not the > main thing though. > After x = 3, if you press enter, you'd get the python prompt > >>> > Then you type the next statement to have > >>> if x == 0: > What you get after this if statement is either a whitespace or ..., > from my phone, I get a ... > So you manually press the spacebar twice to get an indentation for the > first print statement. > As soon as you press enter again, you get the dots, just type in the > elif statements without pressing the spacebar. Then press enter to > move to a new line where the second print statement would be,and press > the spacebar twice again for indentation. > For the second elif statement, follow the procedure for the first elif > statement. > Go ahead and press enter twice to tell the console you are done, you > shouldn't get an error that way. > You should get something like below: > > >>> x=3 > >>> if x==0: > ... print x,'is zero' > ... elif x//1==1: > ... print x,'is odd' > ... elif x//1==0: > ... print x,'is even' > ... else: > ... print'what is this' > ... > > The else statement is optional. > Hope it helps. > > On 8/11/10, Adam Bark <adam.jt...@gmail.com> wrote: > > On 11/08/10 02:34, Sudarshana Banerjee wrote: > >> Hi: I am trying to teach myself Python, and am stuck at the > >> indentation with the elif statement. > >> > >> This is what I am trying to type (as copied from the textbook): > >> > >> x=3 > >> if x==0: > >> print "x is 0" > >> elif x&1 ==1: > >> print "x is a odd number" > >> elif x&1==0: -- Line 6 > >> print "x is a even number" > >> > >> If I am combining the if and the print statement, then the elif > >> statement is in the next line, and all is well with the world. If > >> however, I write the print as a separate statement, I am getting a > >> syntax error after I press Enter after keying the first elif statement. > >> > >> >>> x=3 > >> >>> if x==0: > >> print x > >> elif x==2: > > > > Here you have indented the elif statement but it should be at the same > > level as the if: > > >>> x=3 > > >>> if x==0: > > ... print x > > ... elif x==2: > > ... print "something else" > > ... > > >>> > > > > > >> SyntaxError: invalid syntax > >> > >> Again: > >> >>> x=3 > >> >>> if x==2: print x > >> elif x&1 == 1: print 'x is odd' > >> >>> elif x&1 ==0: print 'x is even' > >> SyntaxError: invalid syntax > > > > I'm not sure what's going on here but the second elif is being > > interpreted separate to the rest of the if statement hence a SyntaxError: > > >>> elif x&1 == 0: print "x is even" > > File "<stdin>", line 1 > > elif x&1 == 0: print "x is even" > > ^ > > SyntaxError: invalid syntax > > > > This works: > > >>> if x==2: print x > > ... elif x&1 == 1: print 'x is odd' > > ... elif x&1 ==0: print 'x is even' > > ... > > x is odd > > > > > >> > >> If I am pressing two Enters, the code executes; so I have a elif > >> without a if, and again, a syntax error. What am I not doing right? > >> > >> Thank you. > >> > >> Sudarshana. > > HTH, > > Adam. > > > > > > > > > -- > Elegbede Muhammed Oladipupo > OCA > +2348077682428 > +2347042171716 > www.dudupay.com > Mobile Banking Solutions | Transaction Processing | Enterprise > Application Development > _______________________________________________ > Tutor maillist - Tutor@python.org > To unsubscribe or change subscription options: > http://mail.python.org/mailman/listinfo/tutor >
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