matrix production

#predefined var
first = None
second = None
result = None
col_ = 0
row = 0
#class
class Matrix:
    def __init__(self, row, col):
        self.row=row
        self.col=col
        self.matrix = [[[]for i in range(col)] for i in range(row)]

    def create(self):
        for i in range(0, self.row):
            for j in range(0, self.col):
                self.matrix[i][j] = input("Input row %d & col %d : " %(i+1, j+1))

    def view(self):
        for i in range(0, self.row):
            for j in range(0, self.col):
                print "%d" %(self.matrix[i][j]),
            print ""

def firstMatrix():
    print "First Matrix"
    row_ = input("Row ? ")
    global col_
    col_ = input("Col ? ")
    global first
    first = Matrix(row_,col_)
    first.create()

def secondMatrix():
    print "Second Matrix"
    global row
    while row != col_:
        row = input("Row ? ")
    col = input("Col ? ")
    global second
    second = Matrix(row,col)
    second.create()

def doMultiply():
    global result
    result = Matrix(first.row, second.col)
    for i in range(0, result.row):
        for j in range(0, result.col):
            result.matrix[i][j] = 0
    for i in range(0,first.row):
        for j in range(0,second.col):
            for k in range(0,second.row):
                result.matrix[i][j] += first.matrix[i][k] * second.matrix[k][j]

print "\n"*25
firstMatrix()
print "_"*80,
secondMatrix()
doMultiply()
print "_"*80
result.view()