Rich Lovely wrote:
2009/9/14 Warren <war...@wantonhubris.com>:
Hey all,
I'm just getting started with Python and I'm working my way through my first
"Learn Python" book on my Mac. I ran into a weird issue though. Here's the
example code I'm using:
#!/usr/bin/env python3
print( "Type integers, each followed by ENTER; or just ENTER to finish" )
total = 0
count = 0
while True:
line = input()
if line:
try:
number = int(line)
except ValueErr as err:
print( "BLARGH : ", err )
continue
total += number
count += 1
else:
break
if count:
print( "count =", count, "total =", total, "mean =", total / count )
Now, what happens is that this starts up and immediately dies, giving me
this error:
Type integers, each followed by ENTER; or just ENTER to finish
Traceback (most recent call last):
method <module> in test.py at line 9
line = input()
EOFError: EOF when reading a line
Why is the "input" statement not waiting for input like it should be and
instead killing the app? My google-fu is failing me on this one.
- Warren
(war...@wantonhubris.com)
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I'm just a little irritated at all the "Don;t use input()"-alikes...
#!/usr/bin/env python3
The OP is in python3, so it isn't an issue. I agree with the don't
use python 3 emails, but that's another matter.
The way I read the OP, the problem appears to be that input() isn't
blocking... so none of the other responses have actually replicated
the problem described. (I can't even get the eof error by hitting
enter on a newline) - I am on a mac, running from terminal.
I can only replicate the error one way:
$ cat test.py | python3
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
EOFError: EOF when reading a line
How exactly you running your script?
This works with 2.6
#!/usr/bin/python
print "Type integers, each followed by ENTER; or just ENTER to finish"
total = 0
count = 0
while True:
line = raw_input()
if line:
try:
number = int(line)
except ValueErr as err:
print( "BLARGH : ", err )
continue
total += number
count += 1
else:
break
if count:
print "count =", count, "total =", total, "mean =", total / count
david [07:43 PM] opteron ~ $ ./tutor_input.py
Type integers, each followed by ENTER; or just ENTER to finish
1
2
3
4
5
6
count = 6 total = 21 mean = 3
--
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