[Tutor] EOF problems
Christopher Spears
cspears2002 at yahoo.com
Wed Jan 28 19:48:45 EST 2004
I've been trying to write a script that uses a while
function and raw_input. Basically, I want to be able
to keep typing input until I type in an EOF signal.
Here is the script:
s = []
while s != "":
s = raw_input ('Type a string:')
My instructor claims that Ctrl-Z in Windows is the
equivalent of an EOF. However, this is not what I
have discovered. Ctrl-Z is the undo command in IDLE.
Instead, I used Ctrl-C, which is the copy command.
Since there was an empty string, the script stopped.
Here is the result:
>>>
Type a string:asdfjk;l
Type a string:asdfj;
Type a string:asdfj
Traceback (most recent call last):
File "C:\Documents and Settings\Christstopher
Spears\My Documents\python\unit7question2.py", line 4,
in -toplevel-
s = raw_input ('Type a string:')
TypeError: object.readline() returned non-string
>>>
Ok, so the script works, but what is the EOF signal in
IDLE? Reading the docs, I seemed to gather that when
reading a file, Python sees an empty string as the
EOF. Am I wrong? Is there some variable that can be
used to signal EOF to Python? I have already tried
eof.
-Chris
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