Python - encryption

def main():

    codes = {'A':'!', 'a':'0', 'B':'@', 'b':'9', 'C':'#',
             'c':'8', 'D':'$', 'd':'7', 'E':'%', 'e':'6',
             'F':'^', 'f':'5', 'G':'&', 'g':'4', 'H':'*',
             'h':'3', 'I':';;', 'i':'2', 'J':'~', 'j':'1',
             'K':'x', 'k':'?', 'L':'b', 'l':'Y', 'M':'e',
             'm':'q', 'N':'a', 'n':'c', 'O':'f', 'o':'D',
             'P':'j', 'p':'G', 'Q':'B', 'q':'J', 'R':'K',
             'r':'E', 'S':'A', 's':'d', 'T':'I', 't':'L',
             'U':'C', 'u':'>', 'V':'<', 'v':'/', 'W':'F',
             'w':'k', 'X':'r', 'x':'R', 'Y':'t', 'y':'o',
             'Z':'n', 'z':'s', ' ':' '}

    input_filename  = 'text.txt'
    output_filename = 'encryption_words.txt'

    encrypted_text = ''

    with open(input_filename) as file_in:
        oryginal_text = file_in.read()

        for char in oryginal_text:
            if char in codes:
                encrypted_text += codes[char]

        print('oryginal:')
        print(oryginal_text)
        print('---')
        print('encrypted:')
        print(encrypted_text)

    with open(output_filename, 'w') as file_out:
        for i in range(0, len(encrypted_text), 50):
            file_out.write(encrypted_text[i:i+50])
            file_out.write('\n')

    print('---')
    print('Encrypted words save to', output_filename)

    with open(output_filename) as file_in:
        print(file_in.read())

main()