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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def signalize_extensions():
 """DB API 2.0 extension are reported by warnings at run-time."""

    warnings.warn("DB-API extension cursor.rownumber used", SalesforceWarning)
    warnings.warn("DB-API extension connection.<exception> used", SalesforceWarning)  # TODO
    warnings.warn("DB-API extension cursor.connection used", SalesforceWarning)
    # not implemented DB-API extension cursor.scroll(, SalesforceWarning)
    warnings.warn("DB-API extension cursor.messages used", SalesforceWarning)
    warnings.warn("DB-API extension connection.messages used", SalesforceWarning)
    warnings.warn("DB-API extension cursor.next(, SalesforceWarning) used")
    warnings.warn("DB-API extension cursor.__iter__(, SalesforceWarning) used")
    warnings.warn("DB-API extension cursor.lastrowid used", SalesforceWarning)
    warnings.warn("DB-API extension .errorhandler used", SalesforceWarning)