Thanks Chris. The atoi function was coming from the locale library
(from locale import atoi). I changed it to int and now it works.
The next hurdle is this:
gzin = GzipFile(fname, 'rb')
data = gzin.readline()
# min_x,min_y = map(atoi,data.split()[:2])
min_x,min_y = map(int,data.split()[:2])
data = gzin.readline()
# span_x,step_x,span_y,step_y = map(atoi,data.split()[:4])
span_x,step_x,span_y,step_y = map(int,data.split()[:4])
data = gzin.read().split('\n')
The last line is a problem, giving me this message: Type str doesn't
support the buffer API (I am guessing a conflict between split and
read?)
Sorry, I am new to Python, so how do I get a Traceback?
Thanks
Andrew
On 07/01/2010, at 7:13 PM, Chris Rebert wrote:
On Thu, Jan 7, 2010 at 12:19 AM, Andrew Gillanders
<andrew.gilland...@uqconnect.edu.au> wrote:
I have run into a problem running a Python script that is part of the
TerraGear suite for building scenery for FlightGear. I am using
Mac OS X
10.4, running Python (version 3.0.1) in a Unix terminal.
The purpose of the script is to walk a directory tree, unzipping
files, and
passing the contents to an executable C program. The problem
occurs here:
gzin = GzipFile(fname, 'rb')
data = gzin.readline()
min_x,min_y = map(atoi,data.split()[:2])
The input file, when uncompressed, is an ASCII file with a line
with two
numbers, then a line of four numbers, then many long lines of
numbers. I can
see what the last is trying to do: split the string into two
words, convert
them to integers, and assign them to min_x and min_y.
At the third line, I get the message "expected an object with the
buffer
interface". Which object is it referring to?
The elements of the list produced by `data.split()[:2]`, which are
either Unicode strings or bytestrings, neither of which are buffers.
Have some functions been
changed to pass buffer objects instead of strings? How can I fix
the source
code to make it run?
The error is being raised by the atoi() function (in the future,
please post the full Traceback, not just the final error message).
What module/library does your atoi() function come from (look for an
`import` statement mentioning it)?
The only functions by that name in the Python standard library both
operate on strings, not buffers, and thus can't be the same one your
code is using.
In any case, replacing `atoi` with `int` in your code will likely
solve the problem. The built-in int() function* can convert strings to
integers.
Cheers,
Chris
--
http://blog.rebertia.com
*Not really a function, but close enough for newbie explanatory
purposes.
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http://mail.python.org/mailman/listinfo/python-list
