Can't find the mistaks in my program
<p>I have the following, but keep getting the TypeError: 'Item' object is not iterable. Can anyone help me?</p>

<pre><code>import xlrd

class Item (object):
    def __init__(self):
        pass

    def readItems(self):
        wb = xlrd.open_workbook("data3.xls")
        sh = wb.sheet_by_index(0)
        sh1 = wb.sheet_by_index(1)
        for i in range(1, sh.nrows):
            item = Item()
            item.matNumber = sh1.row_values(i)[0]

class System(Item):

def __init__(self):
        self.item = item

    def ABC(self):
        for i in self.item:
            print item.matNumber

item = Item()            
system = System()

system.ABC()
</code></pre>
