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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 lat_to_deg(lat):
 """Convert latitude to degrees."""

    if isinstance(lat, str) and (':' in lat):
        # TODO: handle other coordinate systems
        lat_deg = dmsStrToDeg(lat)
    else:
        lat_deg = float(lat)
    return lat_deg