On 09/02/2015 00:19, Alan Gauld wrote:
On 08/02/15 23:01, Shawn Byers wrote:
Hello I was wondering if someone could explain this print statement
for r in range(6,0,-1):
print((6-r)*''+r*'o')
Have you tried running it?
Do you see what it is doing?
Try evaluating range(6,0,-1) at the interpreter (you may want to convert
it to a list) to see what it does.
>>> print( list(range(6,0,-1)) )
Try substituting values for (6-r) and see what string
results you get for each value.
eg
>>> print(6 * '' + 0 * 'o')
>>> print(0 * '' + 6 * 'o')
>>> print(3 * '' + 3 * 'o')
>>> print(3 * '' + 4 * 'o')
>>> etc
In other words, experiment in the >>> interpreter. That's
what it's there for. And its quicker than sending an email
and waiting for a reply (which may not cover the bit you
want to understand anyway).
Then if there's still something you don't understand come
back and ask us about that specific aspect.
If it is a print statement the brackets are not needed, otherwise it's
either the Python 3 or (Python 2 with from __future__ import
print_function) print function.
--
My fellow Pythonistas, ask not what our language can do for you, ask
what you can do for our language.
Mark Lawrence
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