what is the genre of this film?
Comedy-drama
The Devil Wears Prada (film)
The Devil Wears Prada is a 2006 American comedy-drama film directed by David Frankel and produced by Wendy Finerman. 
who is the movie the devil wears prada based on It is adapted from the novel "The Devil Wears Prada" by Lauren Weisberger. She based it on her own experience of working as a personal assistant for American "Vogue" editor Anna Wintour.
wiki:23029243
The Devil Wears Prada (film) [SEP] Introduction
The Devil Wears Prada is a 2006 American comedy-drama film directed by David Frankel and produced by Wendy Finerman. The screenplay, written by Aline Brosh McKenna, is based on Lauren Weisberger's 2003 novel of the same name. The film adaptation stars Meryl Streep as Miranda Priestly, a powerful fashion magazine editor, and Anne Hathaway as Andrea "Andy" Sachs, a college graduate who goes to New York City and lands a job as Priestly's co-assistant. Emily Blunt and Stanley Tucci co-star as co-assistant Emily Charlton and art director Nigel Kipling, respectively. Adrian Grenier, Simon Baker, and Tracie Thoms play key supporting roles.