you can run this code and see that it produces the wrong answer if you play computer on the call to numberlist(['apples''pears''bananas'])you can see the problemline item 'apples'apples'apples'apples'pears'pears'pearsnumber comment set items to ['apples''pears''bananas'start with item as first in sequence print apples + on to the next element in sequence print pears oopsif you go step by step you should see where the incorrect came fromthe initialization is repeated each time in the loop at line undoing the incrementing of number in line messing up your count warningalways be careful that your one-time initialization for loop goes before the loopnot in itfunctions can also return values consider the python for this mathematical sequencedefine the function ( xlet find (ym( - ) def ( )mathematical function return * print( (ym( * - )this code is in example mathfunc py similar example was considered in returned function values (page )but now add the idea of playing computer and recording the sequence in table like when you simplify mathematical expressionpython must complete the innermost parts first tracking the changes means following the function calls carefully and using the values returned again dash '-is used in the table to indicate an undefined variable not only are local variables like formal parameters undefined before they are first usedthey are also undefined after the termination of the functionline - comment remember definition of start onprint( (ym( * - ))first want ( )which is ( pass to function mso = return * substitute resultprint( ( * - ))want ( * - )which is ( * - ( pass to function mso = return * substitute resultprint( )so calculate and print thus far most of the code given has been motivated firstso you are likely to have an idea what to expect you may need to read code written by someone else (or even yourself while back!where you are not sure what is intended also you might make mistake and accidental write code that does something unintendedif you really understand how python worksone line at timeyou should be able to play computer and follow at least short code sequences that have not been explained before it is useful to read another person' code and try to follow it the next exercises also provides code that has not been explained firstor has mistake loops and sequences