这是示例代码。
当我没有声明任何时,我的代码中的 fruit 和 letter 是什么类型>
for letter in 'Python': //**how letter is set to string**
print 'Current Letter :', letter
fruits = 1,45
for fruit in fruits: /****/how fruit is set to int int****
print 'Current fruit :', fruit
输出
Current Letter : P
Current Letter : y
Current Letter : t
Current Letter : h
Current Letter : o
Current Letter : n
Current fruit : 1
Current fruit : 45
您可以使用type()知道类型
for letter in 'Python':
print 'Current Letter :', letter
fruits = 1,45
for fruit in fruits:
print 'Current fruit :', fruit
print type(fruit)
print type(letter)
这将给出以下输出
Current Letter : P
Current Letter : y
Current Letter : t
Current Letter : h
Current Letter : o
Current Letter : n
Current fruit : 1
Current fruit : 45
<type 'int'>
<type 'str'>