(a, b)
return None
Tests for independence between a and b by checking if their PSpaces have
    overlapping symbols. This is a sufficient but not necessary condition for
    independence and is intended to be used internally.

    Notes
    =====

    pspace_independent(a, b) implies independent(a, b)
    independent(a, b) does not imply pspace_independent(a, b)
Tests for independence between a and b by checking if their PSpaces have
    overlapping symbols. This is a sufficient but not necessary condition for
    independence and is intended to be used internally.
Tests for independence between a and b by checking if their PSpaces have overlapping symbols . This is a sufficient but not necessary condition for independence and is intended to be used internally .
def pspace_independent(a, b):
    """
    Tests for independence between a and b by checking if their PSpaces have
    overlapping symbols. This is a sufficient but not necessary condition for
    independence and is intended to be used internally.

    Notes
    =====

    pspace_independent(a, b) implies independent(a, b)
    independent(a, b) does not imply pspace_independent(a, b)
    """
    a_symbols = pspace(b).symbols
    b_symbols = pspace(a).symbols
    if len(a_symbols.intersect(b_symbols)) == 0:
        return True
    return None
def pspace_independent ( a , b ) : a_symbols = pspace ( b ) . symbols b_symbols = pspace ( a ) . symbols if len ( a_symbols . intersect ( b_symbols ) ) == 0 : return True return None