Flatten Nested Try

Sourcery refactoring id: flatten-nested-try

Description:

Merge nested try-statement into a single try

Before:

def testConnection(db, credentials):
    try:
        try:
            db.connect(credentials)
        except InvalidCredentials:
            return 'Check your credentials'
        except ConnectionError:
            return 'Error while trying to connect'
    finally:
        print('Connection attempt finished')
    return 'Connection Successful'

After:

def testConnection(db, credentials):
    try:
        db.connect(credentials)
    except InvalidCredentials:
        return 'Check your credentials'
    except ConnectionError:
        return 'Error while trying to connect'
    finally:
        print('Connection attempt finished')
    return 'Connection Successful'

Explanation:

Flattening try-except statements nested within a try-finally generates equivalent code that is easier to read and expand upon.