Python 类型错误：%d格式：需要数字，而不是元组

我正在运行这个：

def add (a, b):
    print "ADDING %d + %d" % (a, b)
    return a + b

def subtract (a, b):
   print "SUBSTRACTING %d - %d" %(a, b)
   return a -b

def multiply (a, b):
    print "MULTIPLYING %d * %d" % (a, b)
    return a * b

def devide (a, b):
    print "DEVIDING %d / %d" % (a, b)
    return a / b

print " lets do some math with just function!"


age = add(30, 5)
hight = subtract (78, 4)
weight = multiply (90, 2)
iq = divide = (100, 2)

print "Age: %d, Hight: %d, Weight: %d, IQ: %d" % (age, hight, weight, iq)

我明白了：

TypeError: %d format: a number is required, not tuple

---

但是为什么呢？

只是代码中的一些输入错误：

iq = divide = (100, 2)

def devide (a, b):

需要成为

iq = divide(100, 2)

def divide (a, b):

---

您还应该将divide更改为devide；）或者反过来，把

hight

改成

height

，我的天啊，对不起，我现在才知道