In a prosecution under this chapter in a civil proceeding, evidence of the general reputation of the house, building, room, or place designated in the complaint shall be admissible for the purpose of proving the existence of a nuisance. Proof of the fact that any person has pleaded guilty to violation of the provisions of any city ordinance or any other law of the land enacted to prevent a nuisance also is admissible, if it can be shown further that such person, when pleading guilty, was or had been, at the time and place mentioned in the complaint in the action then pending before the court, a frequenter or inmate of such house, building, room, or place, and such proof shall be deemed prima facie evidence of the guilt of the defendant.