Read Yaml configuration file in Python

[binhduonggttn]

I wrote a program to read a Yaml configuration file and display it to the terminal. Now I want to try something like checking if the database (db) in the yaml file is not Sqlite or Postgres then exception will raise

Invalid database type, should be sqlite or postgres

. I tried but still couldn't catch the exception. Can anyone give me suggestion?
My test.yaml file :

db: mysql
dbopt:
host: foobar.baz.qux.com
port: 6311
dbname: spam_eggs
user: hamburger
password: example_password
client_encoding: utf-8
connect_timeout: 60
sslmode: none
query: select * from manufacturing_product

My code:

# process_yaml.py file`
import yaml

with open(r'D:\Python\test.yaml') as file:
    # The FullLoader parameter handles the conversion from YAML
    # scalar values to Python the dictionary format
    data = yaml.full_load(file)

    for item, doc in data.items():
        print(item, ":", doc)
    
    def __init__(self, dbconf):
        self._dbconf = dict(dbconf)

        # checking for database type
        dbtype = self.get_db_type()
        if dbtype != 'sqlite' and dbtype != 'postgres':
            raise exceptions.InvalidConfigError(
                'E01001', 'Invalid database type, should be sqlite or postgres.')
        else:
            self.dbtype = dbtype

My program still cannot catch the exception. My terminal :

Output:
db : mysql
dbopt : {'host': 'foobar.baz.qux.com', 'port': 6311, 'dbname': 'spam_eggs', 'user': 'hamburger', 'password': 'example_password', 'client_encoding': 
'utf-8', 'connect_timeout': 60, 'sslmode': 'none'}
query : select * from manufacturing_product

[ndc85430]

Is that all your code? Some things I notice:

- You have declared an __init__ function outside of a class. Why?
- Said function isn't actually called anywhere.
- There's no code to catch any exceptions.