[Tutor] Hello and a (probably) stupid question
Chris Readle
patterner@rocketmail.com
Tue Jul 1 16:38:02 2003
Hi all,
My name is Chris and I've just started learning Python. I'm working
through the tutorial and I've come upon a difficult thing. One of the
sample pieces of code works fine when typed interactively into the
interpreter, but doesn't seem to work when I type it up in gvim. Here are
the two bits of code:
Bit that works:
for n in range(2,10):
for x in range(2, n):
if n % x == 0:
print n, 'equals', x, '*', n/x
break
else:
# Loop fell through without finding factor
print n, 'is a prime number'
This bit returns:
2 is a prime number
3 is a prime number
4 equals 2 * 2
5 is a prime number
6 equals 2 * 3
7 is a prime number
8 equals 2 * 4
9 equals 3 * 3
Which the tutorial indicates is correct.
Bit that doesn't work:
# Testing to see if there is some funny starting value in the variables
causing this to fail
n, x = 0, 0
print n, x
for n in range(2,10):
for x in range(2, n):
if n % x == 0:
print n, 'equals', x, '*', n/x
break
else:
# Loop fell through without finding a factor
print n, 'is a prime number'
This bit returns:
0 0
3 is a prime number
4 equals 2 * 2
5 is a prime number
5 is a prime number
5 is a prime number
6 equals 2 * 3
7 is a prime number
7 is a prime number
7 is a prime number
7 is a prime number
7 is a prime number
8 equals 2 * 4
9 is a prime number
9 equals 3 * 3
Which is a little messed.
Now, the only thing I see that's different is that they're indented
differently. However, both are indented consistently, which is my
understanding of how that should work. To add some kick to the sauce, if
I take the former example and paste it into a text file and run THAT
through the interpreter, it works as well.
Any thoughts from the python experts out there?
chris
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