def validate_nodepool_name(namespace):
    'Validates a nodepool name to be at most 12 characters, alphanumeric only.'
    if (namespace.nodepool_name != ''):
        if (len(namespace.nodepool_name) > 12):
            raise CLIError('--nodepool-name can contain atmost 12 characters')
        if (not namespace.nodepool_name.isalnum()):
            raise CLIError('--nodepool-name should only contain alphanumeric characters')
Validates a nodepool name to be at most 12 characters, alphanumeric only.
def validate_nodepool_name(namespace):
    
    if (namespace.nodepool_name != ):
        if (len(namespace.nodepool_name) > 12):
            raise CLIError('--nodepool-name can contain atmost 12 characters')
        if (not namespace.nodepool_name.isalnum()):
            raise CLIError('--nodepool-name should only contain alphanumeric characters')