带有 if 的多个条件

问题描述

我正在尝试检查if...and语句是否满足两个条件：

if foo < 0 and bar < 0:
    #do something

但它总是回归积极。 为什么？

这是完整的代码：

loop = 1
while loop == 1:
    t = raw_input("Please enter a number.")
    d = raw_input("Please enter another number")
    limit = raw_input("Please enter another number")
    try:
        t = int(t)
        d = int(d)
        limit = int(limit)
        loop = 0
    except ValueError:
        print "Sorry, but one of those was an invalid input. Please ensure you enter only numbers greater than zero."
    if t > 0 and d > 0:
        loop = 0
    else:
        pass