def p_elif2(p):
'''elif : ELIF expr block elif
| ELIF expr block else
'''
p[0] =Node('IF')
p[0].cond = p[2]
p[0].body = p[3].body
p[0].orelse = p[4]
def p_if2(p):
'''if : IF expr block elif
| IF expr block else
'''
p[0] = Node('IF')
p[0].cond = p[1]
p[0].body=p[3].body
p[0].orelse = p[4]
