Thinking about it, it's strange that hashlib doesn't have a function that accepts a file-object as input, to make the efficient method default pit of success. N

Thinking about it, it's strange that hashlib doesn't have a function that accepts a file-object as input, to make the efficient method default pit of success. Naive implementations like hash(f.read()) are all too common to see. Such an api would also allow the entirety of the tight loop to be done outside of slow interpreted code. Guessing the rationale is that if you read a file, you also want to use the content for something else, not only compute its hash.