In python, Explanations help! thanks.

1Write a function count Pos() that takes a two-dimensional list of integers as a parameter and returns the number of elements in the list that are positive. If there are no positive numbers in the list, then the function should return 0. The following shows several sample runs of the function Python 3.6.2 Shell File Edit She Debug Options Window Help >>>val - countPos([1, -1], [0, -3, 31, [12, 14, 16, 18]]) > val >>>countPos (Co], [0, 1], [0, 1, 2, 3],-5]1) 4 >>>countPos([0-1, -2, -3], [0], [-3, -2, -1], [0], [-3,-211 0 >>countPos(]) 0 Ln: 16 Col: 4 ile:/I/Users/bmaya/Documents/DePaul_Teaching/17-18_WQ/csc241 W2017Hws/assign7 html 1/3 /14/2018 Assignment 7 CSC 241-801 2. Write a function buildStrO that takes a two-dimensional list as a parameter and returns a string built from the strings found in the list. The list can contain any type of item. Recall that the typeO function can determine what type of object is currently stored in a variable and is helpful for this question. If the list is empty or the list contains no strings, the function should return the empty string. The following shows several sample runs of the function python 3.62 Shell File Edit Shel Debug Options Window Help >>> s = buildStr ( [ [ ' test' , 1, 2], [3 . 1415, ' Gertrude' , 'cat' ] , [5, 4, 3, 2, 1] , Prudence' ] ] ) >S 'testGertrudecat Prudence' >>> buildStr ( [ [ 1, 2, 3, 4, 5], [ ' Gertrude' ] , [ ' Thursday' , 3 . 5], [ ' YES ! ! ' , 1], [ "Booooo", 5, 35] ] ) Gertrude ThursdayYES! !Boooo0' >>>buildStr () >>> buildStr ([[1, 2], [3, 4], [5, 6], [7, 8], [9, 10], [11, 12]]) Ln: 25 Col: 4