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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 is_provider_configured(opts, provider, required_keys=(), log_message=True, aliases=()):
    '''
    Check and return the first matching and fully configured cloud provider
    configuration.
    '''
    if ':' in provider:
        alias, driver = provider.split(':')
        if alias not in opts['providers']:
            return False
        if driver not in opts['providers'][alias]:
            return False
        for key in required_keys:
            if opts['providers'][alias][driver].get(key, None) is None:
                if log_message is True:
                    # There's at least one require configuration key which is not
                    # set.
                    log.warning(
                        "The required '%s' configuration setting is missing "
                        "from the '%s' driver, which is configured under the "
                        "'%s' alias.", key, provider, alias
                    )
                return False
        # If we reached this far, there's a properly configured provider.
        # Return it!
        return opts['providers'][alias][driver]

    for alias, drivers in six.iteritems(opts['providers']):
        for driver, provider_details in six.iteritems(drivers):
            if driver != provider and driver not in aliases:
                continue

            # If we reached this far, we have a matching provider, let's see if
            # all required configuration keys are present and not None.
            skip_provider = False
            for key in required_keys:
                if provider_details.get(key, None) is None:
                    if log_message is True:
                        # This provider does not include all necessary keys,
                        # continue to next one.
                        log.warning(
                            "The required '%s' configuration setting is "
                            "missing from the '%s' driver, which is configured "
                            "under the '%s' alias.", key, provider, alias
                        )
                    skip_provider = True
                    break

            if skip_provider:
                continue

            # If we reached this far, the provider included all required keys
            return provider_details

    # If we reached this point, the provider is not configured.
    return False