It used to be that when you called a movie a glorified sitcom, it was an insult. But when you watch “Fatherhood,” an unabashedly formulaic, undeniably sweet Netflix dramedy in which Kevin Hart offers up a benign variation on his trademark irascibility in the role of a devoted but desperate single dad, it’s easy to imagine the sitcom version as richer, deeper, more layered. That said, on its own terms the movie accomplishes what it sets out to do. It transitions Hart from playfully scowling cutup to earnest heartfelt actor, and it does so in a way that, at times, is genuinely touching, even as the audience can see every sanded-down conflict and market-tested beat falling into place.

Directed and co-written by Paul Weitz (“Little Fockers,” “About a Boy”), adapting Matthew Longelin’s 2011 memoir, “Fatherhood” is grounded in its opening tragedy. Matt (Hart), a Boston tech engineer, and his wife, Liz (Deborah Ayorinde), are about to have their first child. In the hospital, Liz gives birth to a beautiful girl named Maddy…and then dies, suddenly, of a pulmonary embolism.