Expression “I can / can't tell the things”

Question

I'm French and have sometimes/often difficulty understanding certain expressions.

Presently, I'm not sure of the sense of the following phrase:

I can tell the things

that lies in this sentence :

I am learning Python and so far I can tell the things below about __new__ and __init__

I wonder if the phrase in it is correct or if it shouldn't be :

I can't tell the things

I would understand the second one as meaning "I'm completely confused about __new__ and __init__" , but like it presently is, I'm not sure how I must interpret the phrase hence the sentence.

Also, is the word below part of the phrase? or not, as I did in the above line with can't?

In fact, I also wonder if the phrase is an idiom or not.

Answer 1

The whole phrase is definitely not some idiom, it's just normal use of the idiomatic phrase in this specific context:

I can tell that [something]...

is equivalent to "I know that [something] is true"

"Things below" in this case means the listed statements. You could replace that statement in the linked question with "I know that:"

The asker asks this to avoid answers to contain informations he knows already, so he lists his current knowledge before asking questions that depend on it.

In this case, below (not bellow) means simply "listed under this statement", normal physical below as "located lower".