python - How to easy pass a single tuple to the startswith function from the list of tuples? -

i want realize search , replace strings functionality in python. wrote following code, main problem convert list tuple. realized in 2 loops, can me in easier way pass tuple startswith function? (list in rcsv_list variable)

rman_config = (''' rman configuration parameters database db_unique_name test are: configure retention policy redundancy 1; # default configure backup optimization off; # default configure default device type disk; # default configure controlfile autobackup off; # default configure device type disk parallelism 1 backup type backupset; # default ''')  rcsv_list = [('retention policy', 'to recovery window of 5 days'),               ('controlfile autobackup', 'on'),               ('device type', 'disk parallelism 4 backup type backupset')]  # unpack list of tuples single list rcsv_tmp_list = [] l in rcsv_list:     t in l:         rcsv_tmp_list.append(t)  # convert list tuple rcsv_tuple = tuple(rcsv_tmp_list)  = 0  line in rman_config.splitlines():     if line.startswith(rcsv_tuple, 10):         line = 'configure ' + rcsv_tuple[i] + ' ' + rcsv_tuple[i+1] + ';'         += 2         print(line)     else:         print(line) 

output:

rman configuration parameters database db_unique_name test are: configure retention policy recovery window of 5 days; configure backup optimization off; # default configure default device type disk; # default configure controlfile autobackup on; configure device type disk parallelism 4 backup type backupset; 

the main idea of above code pass startswith function tuple search in line in rman_config string. purpose, created rcsv_tuple variable tuple type. code works fine, @ end have 2 additional questions:

1. it possible simplify above code without unpack , covert variables? in other words - how pass tuple directly startswith function list of tuples?

2. is there other method search , replace strings in case?

ps. rcsv_list variable list of tuple because -> cursor.fetchall()

you can replace loop , construction of tuple with:

rcsv_tuple = sum(rcsv_list, ()) 

also can directly iterate result of query instead of querying, split, etc:

cursor.execute(sql) row in cursor:    # ... 

finally might eliminate else clause printing independently of condition.