#!/usr/bin/python
#coding=utf-8

for letter in "python":
  print '当前字母：', letter;

fruits = ["apple", "banana", "orange"]
for fruit in fruits:
  print "当前水果：", fruit

# 通过索引
for index in range(len(fruits)):
  print "当前水果：", fruits[index]

for i in range(10, 20):
  print "i：", i

# print "pi：", pi