def config2dict(fname):
    d = {}
    codeobj = compile(open(fname).read(), 'myconfig', 'exec')
    exec(codeobj, d)
    return d

dd = config2dict("myconfig.cfg")
print(dd)

DB_HOST = 172.123.125.34
DB_USER = app_user
DB_PASS = lly4paw

Traceback (most recent call last):
  File "mytest.py", line 19, in <module>
    dd = config2dict("myconfig.cfg")
  File "mytest.py", line 14, in config2dict
    codeobj = compile(open(fname).read(), 'myconfig', 'exec')
  File "myconfig", line 1
    DB_HOST = 172.123.125.34