Driver code
n = 55 NEW_LINE if ( isTriangular ( n ) ) : NEW_LINE INDENT print ( " The ▁ number ▁ is ▁ a ▁ triangular ▁ number " ) NEW_LINE DEDENT else : NEW_LINE INDENT print ( " The ▁ number ▁ is ▁ NOT ▁ a ▁ triangular ▁ number " ) NEW_LINE DEDENT