On Fri, Oct 3, 2008 at 9:45 AM, David [EMAIL PROTECTED] wrote:
Here is the code:
def main():
import string
Hey,
lagging a bit behind the list,
import string is unnecessary, mate.
___
Tutor maillist - Tutor@python.org
Omer [EMAIL PROTECTED] wrote
Here is the code:
def main():
import string
import string is unnecessary, mate.
Not entirely true since the code uses string.split()
However since the split method of the string could
be used instead then that would indeed render the
import unnecessary.
Hello Alan, dear list members,
Alan Gauld wrote:
The solution you have already seen - use string.split(',') to separate
the string into substrings and then convert each substring to an
integer.
This I have now done by using eval(). But now I wonder whether that is
actually clever because it is
David [EMAIL PROTECTED] wrote
the string into substrings and then convert each substring to an
integer.
This I have now done by using eval(). But now I wonder whether that
is actually clever because it is supposed to be similarly
problematic as the input() function in terms of security.
Hello,
I am trying to do some exercises in John Zelle's book (chapter 4).
I got stuck:
Write a program that finds the average of a series of numbers entered
by the user. The program should first ask the user how many numbers
there are. Note: the average should always be a float, even if the
On Thu, Oct 2, 2008 at 12:06 PM, David [EMAIL PROTECTED] wrote:
Hello,
I am trying to do some exercises in John Zelle's book (chapter 4).
I got stuck:
Write a program that finds the average of a series of numbers entered by
the user. The program should first ask the user how many numbers
On Fri, Oct 03, 2008 at 01:06:29AM +0800, David wrote:
Hello,
I am trying to do some exercises in John Zelle's book (chapter 4).
I got stuck:
Okay, I can ask how many number are to be added:
numbers = input(How many number do you want me to calculate? )
If I then get a reply, say 5,
[EMAIL PROTECTED] wrote on
10/02/2008 01:06:29 PM:
Hello,
I am trying to do some exercises in John Zelle's book (chapter 4).
I got stuck:
Write a program that finds the average of a series of numbers entered
by the user. The program should first ask the user how many numbers
there
Hello Christopher,
[EMAIL PROTECTED] wrote:
Okay, I can ask how many number are to be added:
numbers = input(How many number do you want me to calculate? )
you should really use raw_input to get the info from the user,
and then convert it to a number.
On Fri, Oct 03, 2008 at 01:38:48AM +0800, David wrote:
Does that mean input() is obsolete (after all, Zelle's book is not the
freshest on the shelf)? Or do they have different uses?
Depends on how you look at it.
input() automatically evaluates whatever the user types as a Python
expression
On Thu, Oct 02, 2008, Steve Willoughby wrote:
On Fri, Oct 03, 2008 at 01:38:48AM +0800, David wrote:
Does that mean input() is obsolete (after all, Zelle's book is not the
freshest on the shelf)? Or do they have different uses?
Depends on how you look at it.
input() automatically evaluates
Cheers for the insights!
However, I just found out that changing input() to raw_input() breaks my
code:
This program takes the average of numbers you supply!!
How many numbers do you want me to work with? 2
You want me to take the average of 2 numbers.
Please type the numbers, separated by
On Thu, Oct 02, 2008 at 10:54:56AM -0700, Bill Campbell wrote:
Remember the cardinal rule NEVER TRUST USER INPUT! Always check
for validity, and use methods that prevent malicious strings from
allowing the user to get unauthorized access or change things
they shouldn't.
Yes, I probably
On Fri, Oct 03, 2008 at 02:06:47AM +0800, David wrote:
Cheers for the insights!
However, I just found out that changing input() to raw_input() breaks my
code:
Recall that we told you raw_input() returns a string, while
input() returns an integer if you typed an integer value.
So you need
one at a time inside
the loop.
add = add + int(raw_input(Please type the next number:))
Chris
David [EMAIL PROTECTED]
Sent by: [EMAIL PROTECTED]
10/02/2008 02:06 PM
To
tutor@python.org,
[EMAIL PROTECTED]
cc
Subject
Re: [Tutor] dealing with user input whose value I don't know
Cheers
Hello Steve,
thanks for all your help and comments.
What happens, though, is that with
numbers = int(raw_input(Please type the numbers, separated by commas: ))
my code is still defunct (whereas input() works):
Please type the numbers, separated by commas: 1,2
Traceback (most recent call
,
[EMAIL PROTECTED]
cc
Subject
Re: [Tutor] dealing with user input whose value I don't know
Cheers for the insights!
However, I just found out that changing input() to raw_input() breaks my
code:
This program takes the average of numbers you supply!!
How many numbers do
David [EMAIL PROTECTED] wrote
However, I just found out that changing input() to raw_input()
breaks my code:
You want to know the average of the numbers: 1,2
Traceback (most recent call last):
File avgInput.py, line 13, in module
add = add + i
TypeError: unsupported operand type(s) for
David [EMAIL PROTECTED] wrote
Does that mean input() is obsolete (after all, Zelle's book is not
the freshest on the shelf)? Or do they have different uses?
They have different uses and input is very convenient at the
prompt
or when experimenting but in most cases is the wrong choice for
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