Problem transferring variables between modules

Question

# Config.py
mess = ''
print('*',mess,'*')
#------------------------
# try1.py
while True:
    import Config
    mess = input('Input: ')
    Config.mess = mess
    import try2
    if mess == '':
        break
#------------------------
# try2.py
import Config
print('=', Config.mess, '=')
#---The result ----------
*  *
Input: 111
= 111 =
Input: 222
Input: 333
#------------------------

Try1.py takes an entered variable (mess) and passes it to try2.py to print. Using Config.py.

It works the first time only.

Also tried to unload (del) Try2.py after each input, but gave me the same result.