Basic question from pure beginner
Peter Otten
__peter__ at web.de
Wed Jul 1 03:01:44 EDT 2009
sato.photo at gmail.com wrote:
> I have been going through some Python Programming exercises while
> following the MIT OpenCourseWare Intro to CS syllabus and am having
> some trouble with the first "If" exercise listed on this page:
>
>
http://en.wikibooks.org/wiki/Python_Programming/Conditional_Statements#If_Exercises
>
> I have been able to make the module quit after entering a password
> three times, but can't get it to quit right away after the correct one
> is entered. I know this is really basic, please forgive me. I have
> no programming experience and have just started going through these
> tutorials.
>
> My code is here:
>
> http://python.pastebin.com/m6036b52e
>
> -daniel
Some hints:
(1) Have the while loop check for both the correct password and the number
of tries. Pseudocode:
while <more tries allowed> and <password not entered correctly>:
...
(2) After the loop has terminated you can check whether the password was
entered correctly and print the appropriate message.
Aside: you can't mix if...else with other statements
correct:
if cond:
print "sunny"
else:
print "cloudy"
print "weather"
wrong:
if cond:
print "norwegian"
print "blue"
else: # syntax error, else must immediately follow the indented if-block:
print "moon"
you could fix it like so:
if cond:
print "norwegian"
print "blue"
if not cond:
print "moon"
Peter
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