python about iterable and iterator

可以 iterable 的物件 是 字串 

整數是不可 iterable 的物件

===

fruits=["apple","banana","cherry","mellon""orange","pinapple"]

x=iter(fruits)

print(x)

print(next(x))

======

fruits=["apple","banana","cherry","mellon""orange","pinapple"]

x=iter(fruits)

for i in range(len(fruits)):

    print(next(x))

  =====================

fruits=["apple","banana","cherry","mellon""orange","pinapple"]

for i in range(len(fruits)):

    print(fruits[i])