How do 'for in' loops work in python? -

i'm new python (after c, c++). learning fine until got stuck @ 'for x in' loops. specific take example in program lists prime numbers:

 num in range(10,20):    in range(2,num):       if num%i == 0:             j=num/i                 print ('%d equals %d * %d' % (num,i,j))          break    else:                        print (num, 'is prime number') 

what happening in first 2 lines of code? how code flowing? please elaborate.

for num in range(10,20): 

this creates range object (representing numbers 10 19 inclusive) , num iterates through it

  in range(2,num): 

this creates range object (representing numbers 2 num-1 inclusive) , i iterates through it

much same as:

for (int num = 0; num < 20; ++num) {    (int = 2; < num; ++i) { 

in c-like languages, , no more ambiguous.

at end of loop, else clause run if loop didn't encounter break statement.