def p_Bioperation(t):
'''Bioperation : Expr PLUS Expr
| Expr MINUS Expr
| Expr TIMES Expr
| Expr DIVIDE Expr
| Expr GT Expr
| Expr LT Expr
| Expr GE Expr
| Expr LE Expr
| Expr EQ Expr
| Expr NE Expr'''
t[0] = n.Binop(t[1], t[3], t[2])
