import scipy,array


def try_read_file():

    def line_reader(lines):
        for l in lines:
            i = l.find('#')
            if i != -1: l = l[:i]
            l = l.strip()
            if l: yield l

    def column_counter():
        inputer = (line.split() for line in line_reader(file('/home/kartik/Downloads/yahoo_dataset/set1.train.txt'.strip())))
        loopexit = 0
        for line in inputer:
            feature_tokens = (token.split(':') for token in line[6:])
            feature_ids = array.array('I')
            for t in feature_tokens:
                feature_ids.append(int (t[0]))

            tmpLength = feature_ids[-1]
            print feature_ids
            loopexit = loopexit + 1
            if loopexit > 0:
                break

        return tmpLength

    def line_counter():
        inputer = (line.split() for line in line_reader(file('/home/kartik/Downloads/yahoo_dataset/set1.train.txt'.strip())))
        noOfRows = 0
        for line in inputer:
            noOfRows = noOfRows + 1
        return noOfRows


    inputer = (line.split() for line in line_reader(file('/home/kartik/Downloads/yahoo_dataset/set1.train.txt'.strip())))

    feature_id_list = []
    feature_value_list = []
    relevance_list = []

    noOfRows = line_counter()
    noOfCols = column_counter()

    print noOfRows
    print noOfCols              # line 52
    #Create the feature array
    feature_array = scipy.zeros((noOfRows,noOfCols), float) 
    rowCounter = 1;
    for line in inputer:
        feature_tokens = (token.split(':') for token in line[6:])
        feature_ids = array.array('I')  
        feature_values = array.array('f')

        for t in feature_tokens:
            feature_ids.append(int(t[0]))
            if (t[0]!=colCounter):
                feature_array[rowCounter,colCounter] = 0
            else:    
                feature_array[rowCounter,colCounter] = t[1]
            feature_values.append(float(t[1]))
            colCounter = colCounter + 1;  

        label = float(line[0])
        assert(line[1].startswith('qid:'))

        query_id = int(line[1][4:])
        feature_id_list.append(feature_ids)
        feature_value_list.append(feature_values)
        relevance_list.append(label)
        rowCounter = rowCounter + 1;

    return feature_array   

Error:

Traceback (most recent call last):
  File "<pyshell#97>", line 1, in <module>
    try_read_file()
  File "/home/kartik/Python/prelim_read.py", line 52, in try_read_file
    print noOfCols
TypeError: an integer is required

What is the problem, i couldn't figure it out?

I tried to debug it, but it doesnt really go inside those methods. It gives me an address in place of those variables.