hereval is the variable that takes the value of the item inside the sequence on each iteration loop continues until we reach the last item in the sequence the body of for loop is separated from the rest of the code using indentation examplepython for loop program to find the sum of all numbers stored in list list of numbers numbers [ variable to store the sum sum iterate over the list for val in numberssum sum+val print ("the sum is"sumwhen you run the programthe output will bethe sum is the range (functionwe can generate sequence of numbers using range (function range ( will generate numbers from to ( numberswe can also define the startstop and step size as range (startstop,step_sizestep_size defaults to start to and stop is end of object if not provided this function does not store all the values in memoryit would be inefficient soit remembers the startstopstep size and generates the next number on the go to force this function to output all the itemswe can use the function list(exampleprint(range( )print(list(range( ))print (list (range ( ))print (list (range ( ))outputrange ( [ [ [