Plz make me understand it really 😭

Question

print('\n'.join([''.join(['{}'.format(i) for i in range(1,j)]) for j in range(2,6)]))
It is equal to this
That I know

For i in range(1,4)
For j in range(1,I)
Print(j,end="")
Print()

Answer 1

So what you don't understand really?

Answer 2

After print in first one Syntax

Answer 3

From "n

Answer 4

Lets Start with most inside thing.

x = ['{}'.format(i) for i in range(1,j)]

now we can see There is a list contains i in (j - 1) times.
Then you can see this:

y = [''.join(x) for j in range(2,6)] # x is what we calculated before

join method will connect array elements together. For example:

####### Example #######
x = ['name', ':', 'Arshia']
print(''.join(x)) # Output is name:Arshia
####### Example #######

And this thing repeats in 4 times.

Now next sentence:
print('\n'.join(y))
the final part is parsing into (separated/delimited i dont know i cant speak well 😶) lines. at the end answer might be:

12
123
1234
12345