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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 _timestamps_eq(a, b):
 """Compares two timestamp operands for equivalence under the Ion data model."""

    assert isinstance(a, datetime)
    if not isinstance(b, datetime):
        return False
    # Local offsets must be equivalent.
    if (a.tzinfo is None) ^ (b.tzinfo is None):
        return False
    if a.utcoffset() != b.utcoffset():
        return False
    for a, b in ((a, b), (b, a)):
        if isinstance(a, Timestamp):
            if isinstance(b, Timestamp):
                # Both operands declare their precisions. They are only equivalent if their precisions are the same.
                if a.precision is b.precision and a.fractional_precision is b.fractional_precision:
                    break
                return False
            elif a.precision is not TimestampPrecision.SECOND or a.fractional_precision != MICROSECOND_PRECISION:
                # Only one of the operands declares its precision. It is only equivalent to the other (a naive datetime)
                # if it has full microseconds precision.
                return False
    return a == b