age = int(input("請(qǐng)輸入你家狗狗的年齡: "))
print("")
if age <= 0:
    print("你是在逗我吧!")
elif age == 1:
    print("相當(dāng)于 14 歲的人。")
elif age == 2:
    print("相當(dāng)于 22 歲的人。")
elif age > 2:
    human = 22 + (age -2)*5
    print("對(duì)應(yīng)人類(lèi)年齡: ", human)
 
### 退出提示
input("點(diǎn)擊 enter 鍵退出")
----------------------------------------------------------
# 該實(shí)例演示了數(shù)字猜謎游戲
number = 7
guess = -1
print("數(shù)字猜謎游戲!")
while guess != number:
    guess = int(input("請(qǐng)輸入你猜的數(shù)字："))
 
    if guess == number:
        print("恭喜，你猜對(duì)了！")
    elif guess < number:
        print("猜的數(shù)字小了...")
    elif guess > number:
        print("猜的數(shù)字大了...")

while 判斷條件(condition)：
    執(zhí)行語(yǔ)句(statements)……

languages = ["C", "C++", "Perl", "Python"] 
for x in languages:
.. print (x)
... 
C
C++
Perl
Python

for i in range(5):
     print(i)
0
1
2
3
4
你也可以使用range指定區(qū)間的值：
for i in range(5,9) :
    print(i)
5
6
7
8
也可以使range以指定數(shù)字開(kāi)始并指定不同的增量(甚至可以是負(fù)數(shù)，有時(shí)這也叫做'步長(zhǎng)'):
    for i in range(0, 10, 3) :
    print(i)
    
0
3
6
9
您可以結(jié)合range()和len()函數(shù)以遍歷一個(gè)序列的索引,如下所示:
a = ['Google', 'Baidu', 'Runoob', 'Taobao', 'QQ']
for i in range(len(a)):
...     print(i, a[i])
... 
0 Google
1 Baidu
2 Runoob
3 Taobao
4 QQ

from modname import *