open file and create file .

[ephhabte]

I am learning to python programming and i have some questions about python code .
i have tried to write some codes for reading a file from a different database and creating a file if the file doesn,t exsit on database. I have to look 3 databases before I create the file. Can anyone help me how to solve this problem ? I need a datastruktur to look up the file fro 3 different databases.what can i do?help.


For example.

I think I have to use this
dbm= open('dbm.fil', 'r'):
for line in dbms.xreadlines ():

[luke14free]

Try with:

tofind="some"
f=open ("your_db.db","r)
f=f.read().split('\n')  #change \n with your divisor...
found=False
for i in f:
    if i==tofind:
         found=i
         break
if not found:
        ##no entry has been found, write your code here
else:
        ##found an entry, write your code here