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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def untranslateName(s):
 """Undo Python conversion of CL parameter or variable name."""


    s = s.replace('DOT', '.')
    s = s.replace('DOLLAR', '$')
    # delete 'PY' at start of name components
    if s[:2] == 'PY': s = s[2:]
    s = s.replace('.PY', '.')
    return s