Specifications:
Weight: 40 ounces or 2lb 8oz
Caliber: .357 Magnum.
Capacity: 6 rounds.
Barrel: 3 inches, 1:14 LH twist, 6-groove.
Dimensions: 8.5-inches (L) x 5.5-inches (H) x 1.55-inches (W)
Frame: Stainless Steel.
Finish: Semi-bright.
Grip: Walnut.
Sights: Adjustable (windage and elevation) rear, interchangeable orange ramp front.

Hi Vladimir and welcome. The 3" Python has an unloaded weight of 40oz, or 2lb, 8oz. - Loaded with 6rds of 125gr JHP .357 ammunition would have a weight of approximately 42.76oz's or 2lbs 10.76oz's. Cheers and stay safe!

Vladimir, it has a unloaded weight of 40oz's or 2 pounds 5 Oz's. Here's more information if interested..........
Overall Length: 8.5 in.
Width: 1.55 in.
Height: 5.5 in.
Weight: 2 lbs., 5 oz.
Trigger: 4 lbs., 3.8 oz. (SA); 8 lbs., 7 oz. (DA) pull. Hope this helps.