David Wells has fingered the reason his book, “Perfect I Am Not” is causing a colossal buzz: The Post.

According to the pitcher turned author, had The Post ignored his story about admitting he pitched a perfect game in 1998 half-drunk and wrote about it Thursday, the firestorm he is living in wouldn’t have developed.

The book, which is headed for the best seller’s list, has already put almost $500,000 in Wells’ pocket before it’s released.

A look at how the loquacious lefty changed his tune:

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What he said in the book

“As of this writing, 15 men in the history of baseball have ever thrown a perfect game. Only one of those men did it half-drunk . . .That would be me.”

What he said on Feb. 26 about his comments in the book

“I don’t recommend doing that. It’s not healthy. It was a phase of my life when I was a party animal. Back then I went out all the time. I could do no wrong that year.”

What he says now

“[Harper Collins] had a deal to get some recognition out with The Post and The Post turned around and screwed them. And that’s how this whole mess started. You write a book and you want to get some recognition and try to promote it.”