tryexc1-session.txt

yotam@durini:l41:197> rm -f numfile # remove file
yotam@durini:l41:198> ./tryexc1.py 
Usage: ./tryexc1.py <filname>
yotam@durini:l41:199> echo $?
1
yotam@durini:l41:200> cp /dev/null numfile
yotam@durini:l41:201> ls -l numfile
-rw-r--r-- 1 yotam yotam 0 2006-09-15 14:22 numfile
yotam@durini:l41:202> ./tryexc1.py numfile
Failed to convert to int line: 
yotam@durini:l41:203> echo $?
4
yotam@durini:l41:204> echo junk1x2y3z > numfile
yotam@durini:l41:205> ./tryexc1.py numfile
Failed to convert to int line: junk1x2y3z

yotam@durini:l41:206> echo $?
4
yotam@durini:l41:207> echo 123 > numfile
yotam@durini:l41:208> ./tryexc1.py numfile
n=123
yotam@durini:l41:209> echo $?
0
yotam@durini:l41:210> rm -f numfile # remove file
yotam@durini:l41:211> ./tryexc1.py numfile
Failed to open numfile
yotam@durini:l41:212> echo $?
2