def wc(filename):
    lines = 0
    words = 0
    letters = 0

    for line in open(filename):
        lines += 1
        letters += len(line)

        pos = 'out'
        for letter in line:
            if letter != ' ' and pos == 'out':
                words += 1
                pos = 'in'
            elif letter == ' ':
                pos = 'out'
    print(lines, end = ' ')
    print(words, end = ' ')
    print(letters, end = ' ')
    print(filename)
wc('blabla.txt')