[Tutor] Unwanted "close failed in file object destructor" after broken pipe

[Tadeus (Eus) Prastowo]

Hi!

First, generate a file named "data.txt" as follows:

-- 8< ----------------------------------
for i in range(1,100):
    print '.' * 80
-- 8< ----------------------------------

After that, save the following snippet as "test.py" in the directory
containing "data.txt":

-- 8< ----------------------------------
import sys

object_file = open('data.txt', 'rb')

for line in object_file:
    sys.stdout.write(line)
-- 8< ----------------------------------

Finally, run the following Unix shell command in the containing directory:

-- 8< ----------------------------------
python test.py | head
-- 8< ----------------------------------

At the end of printing some lines, the following error is reported:

-- 8< ----------------------------------
close failed in file object destructor:
Error in sys.excepthook:

Original exception was:
-- 8< ----------------------------------

How to suppress that unwanted error message?

After all doing something like the following does not give such an error:

-- 8< ----------------------------------
cat data.txt | head
-- 8< ----------------------------------

Thank you very much.

-- 
Best regards,
Eus (FSF member #4445)