Using len()

[ctilly]

I have what I think is a very simple question.  I have a Python script
that I found that I want to tweek a little bit.  All I want to do is
add in a validator to make sure a value has been keyed into the imput
box.

The code currently is...
while yourguess != mynum:

tries = tries + 1
yourguess = input("Your guess? ")

if  (yourguess != mynum):

#blah blah blah

# end of the if statement
# repeat until user gets it right

But I would like to change it to be something like

while yourguess != mynum:

tries = tries + 1
yourguess = input("Your guess? ")

if len(yourguess)==0:
continue

elif (yourguess != mynum):

#blah blah blah

# end of the if statement
# repeat until user gets it right

But this throws the following error and I have no idea why.  Please
enlighten.

My error ==>  len() of unsized object

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ERROR when hitting RETURN on INPUT

[ctilly]

How do you prevent getting the following error when you hit the RETURN
key on an empty INPUT prompt from windows?

If I am at the Interactive Window and I type in: input("blah"), I get
an input dialog.  If I then hit ENTER w/o keying in a value I get the
following error.  WHY

SyntaxError: unexpected EOF while parsing

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Re: Using len()

[ctilly]

That works, thanks.  Can you tell me why the differences exist?

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