On 03/29/2014 01:18 AM, Scott W Dunning wrote:
On Mar 28, 2014, at 9:54 PM, Scott W Dunning <scott....@cox.net> wrote:
Hello, I’m working on some practice exercises from my homework and I’m having
some issues figuring out what is wanted.
We’re working with the while loop and this is what the question states;
Write a function print_n that prints a string n times using iteration.
"""Print the string `s`, `n` times.
This is also in the exercises and I’m not sure what it means and why it’s there.
assert isinstance(s, str)
assert isinstance(n, int)
Any help is greatly appreciated!
Scott
This is what I have so far but I’m not really sure it’s what the excersise is
asking for?
n = 5
def print_n(s, n):
while n > 0:
print s * n
print_n("hello", 10)
Scott,
Are required to use a while loop?
Two ways to solve this, while loop and for in range loop
while loop
n = 5
s = 'some string'
def while_print(s, n):
index = o
while index < n:
print(index, s)
index += 1
def alternative_print(s, n):
for index in range(0, n):
print(index, s)
The while loop requires that a counter variable or some loop exit
condition so you do not end up in an endless loop. This is a common
problem with while loops in programming, not just Python. So, if there
is alternative method of looping available, good programming practice is
to avoid a while loop in any language. The for loop version
automatically iterates over the range from 0 to n-1 (5 times). I
included the index variable in the print to show the increase of the index.
The results for both:
0 some string
1 some string
2 some string
3 some string
4 some string
--
Jay Lozier
jsloz...@gmail.com
_______________________________________________
Tutor maillist - Tutor@python.org
To unsubscribe or change subscription options:
https://mail.python.org/mailman/listinfo/tutor
