For those who missed the Python boat and want one, the original .357 Trooper or the Colt 3-5-7 Model are essentially the same gun.
The original Trooper and 3-5-7 are often called "poor man's Pythons" because they use the exact same frame and action, only with a tapered round barrel and without the better action tuning and Royal Blue finish.
The Trooper and 3-5-7 often had the narrow Service hammer and Service grips, and these days a lot of Colt's that had the Target grips have had them removed for sale at crazy prices and replaced with crap grips.
The original Trooper used the older Colt "E" frame with the firing pin on the hammer and was made only in .38 Special and .22LR, but still it had the same action and frame size as the Python.
The post-1961 Trooper was made in .38 Special and .357 Magnum and used the same "I" frame as the Python.
These are not to be confused with the later Trooper Mark III and Trooper Mark V which are totally different guns and actions.
Trooper .38 Specials can be picked up at very reasonable prices, and the .357 Trooper and 3-5-7 Model are well under Python prices by hundreds if not thousands of dollars.
Colt original Trooper with Service hammer and grips. Also made with Target hammer and grips. Made in early version in .38 Special and .22LR and in later "I" frame version in .38 Special and .357 Magnum.
Colt 357 Model. That was both the name and caliber. The Python is simply the 357 with the Python barrel, slightly more tuned action and the Royal Blue finish.