赋值/不受支持的操作数类型之前引用的局部变量'count'

Question

Python 3.7.4 (tags/v3.7.4:e09359112e, Jul  8 2019, 19:29:22) [MSC v.1916 32 bit (Intel)] on win32
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>>> count = 0
>>> def count():
    for i in range(1, 10):

        count = count + 1
        print(count)

>>> count()

Local variable 'count' referenced before assignment

>>> def count():
    global count
    for i in range(1, 10):

        count = count + 1
        print(count)

>>> count()


Unsupported operand type(s) for +: 'function' and 'int'

Answer 1

只是一个变量作用域错误，解决方案：

def count():
    count = 0
    for i in range(0,10):
        count += 1
        print (count)

count()

打印很好，因为count变量的范围在count子例程内。全局会弄乱范围（OO“封装”），就像在此子例程外声明count变量一样。

希望有帮助。 IMO在这里没有关于OP所指示的变量作用域的问题。

你可以去，

counts = 0

def count(count):
    count = 0
    for i in range(0,10):
        count += 1
        print (count)

count(counts)