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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 _tofloat(obj):
 """Convert to float if object is a float string."""

    if "inf" in obj.lower().strip():
        return obj
    try:
        return int(obj)
    except ValueError:
        try:
            return float(obj)
        except ValueError:
            return obj