I can't get the 'x' part... Please make me understand step wise.

Question

l=[]
for i in range(17):
l.append(i*3)
m=[x&1 for x in l]
print (sum(m))

Answer 1

List comprehension
https://www.sololearn.com/learn/JUMP_LINK__&&__Python__&&__JUMP_LINK/2454/
In case you don't understand it after completing the above lesson,
The 4th line is similar to,
m = [ ]
for x in l:
m.append(x&1)
I guess you know what bitwise AND(&) operation is.

Answer 2

I can't get it...can you please explain?

Answer 3

I think there's a lot of good tutorial, documentation about List comprehension out there in the web.

Well the bitwise AND op x&1 gives you the last bits(binary digits) here which should be one if the num is odd and zero otherwise. Multiplying with binary 11 i.e. 3 doesn't change the last bit of a number if I'm not wrong. Then summing the last bits gives you the total number of odd numbers in the range(17)