def echo(filename):
    f = open(filename)
    lines = f.readlines()
    for line in lines:
        if '\n' == line[-1]:
            line = line[:-1]
        print(line)

def echo2(filename):
    f = open(filename)
    lines = f.readlines()
    for line in lines:
        print(line.strip())
        
def echo3(filename):
    f = open(filename)
    lines = noNewlinesPlease(f.readlines())
    for line in lines:
        print(line)

def noNewlinesPlease(lst):
    return [deNewLine(line) for line in lst]

def deNewLine(line):
    if line[-1] == '\n':
        return line[:-1]
    else:
        return line
    
def makeMatrix(width, height):
    m = [None] * height
    for row in range(len(m)):
        m[row] = [0] * width
    return m