Error in Database connectivity with python3.7

[srm]

check this line

if not conn!=None:

You want

if conn:

or

if conn is not None:

---

And as a matter of fact - you even don't need it (i.e. to check the conn object) - you will either get connected successfully or you will get exception :-)

ya I got it ,it was some internal network error with mysql and just reinstalled as it was test machine and I corrected this line of code in python and is working fine.Thanks