In this example you use the cmd method and the class DBMServError of the sdb.dbm module. You execute an incorrect DBM command and handle the error.
...
1. Create a Python script sample.py with the following contents:
# Import Python modules
# ----------------------------
import sys
import sdb.dbm
#
# Parse call arguments
# --------------------------
dbm_operator = sys.argv [1]
dbm_operator_password = sys.argv [2]
database_name = sys.argv [3]
#
# Call the Database Manager and log on to a database instance
# ------------------------------------------------------
session = sdb.dbm.DBM ('', database_name, '', dbm_operator + ',' + dbm_operator_password)
# Execute incorrect DBM command
for cmd in ['db_state', 'invalid_command']:
try:
result = session.cmd (cmd)
# Display result
print cmd + ': OK ', repr (result)
except sdb.dbm.DBMServError, err:
# Display error message
print cmd + ': ERR', err.errorCode, err.message
2. Call the Python script:
python sample.py DBADMIN SECRET DEMODB
db_state: OK 'State\nONLINE\n'
my_invalid_command: ERR -24977 Unknown DBM command "inval
See also:
Examples for the sdb.dbm Module