Every portion of any building or structure in which theatricals, moving picture shows and amusements are offered, operated, presented or exhibited for gain or profit devoted to the use or accommodation of the public, and all outlets therefrom leading to the street, including all open courts, corridors, stairways, exits and emergency exit stairways, shall be well and properly lighted with electric lights during every performance, and shall remain lighted until the entire audience has left the premises.
(1929 Code, § 343)