Python小栗子--列表（python小例子）

#将一些朋友的名字存储在列表中，并打印问候语

names = ['Https', 'Python', 'Linux', 'WireShark']
print("Hello, " + names[0] + "! \nWelcome to out village.")
print("-"*5)
print("Hello, " + names[1] + "! \nWelcome to out village.")
print("-"*5)
print("Hello, " + names[-1] + "! \nWelcome to out village.")
print("-"*5)
print("Hello, " + names[-2] + "! \nWelcome to out village.")

程序运行结果：

Hello, Https!

Welcome to out village.

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Hello, Python!

Welcome to out village.

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Hello, WireShark!

Welcome to out village.

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Hello, Linux!

Welcome to out village.

--

#打印自己喜欢的通勤方式的宣言

vehicles = ['Car', 'Subway', 'Bike']
for vs in vehicles:
 print("I would like to own a " + vs)

程序运行结果：

I would like to own a Car

I would like to own a Subway

I would like to own a Bike

--

invite_friends = ['Python', 'Java', 'PHP']
for friend_0 in invite_friends:
 print("邀请 " + friend_0 + " 与我共进晚餐")
if "PHP" in invite_friends:
 php_index = invite_friends.index("PHP")
 print(invite_friends[php_index] + "无法赴约")
 invite_friends[php_index] = 'Go' #邀请Go来共进晚餐
print(invite_friends)
print('-'*5)
print("我找到了更大的餐桌，可以邀请更多的人来晚餐")
invite_friends.insert(0, 'Kali')
invite_friends.insert(2, 'CentOS')
invite_friends.append('Redhat')
print(invite_friends)
print('-'*5)
print("新餐桌没有送达位置不够，现在我只能邀请" + invite_friends[1] + "和" + invite_friends[-1] + "来我家吃晚餐")
for friend_1 in invite_friends[::-1]:
 if friend_1 == "Kali" or friend_1 == "CentOS" or friend_1 == "Java" or friend_1 == "Go":
 invite_index = invite_friends.index(friend_1)
 #因为列表长度会变短，索引会递增，所以只能从后往前删，得到的列表才是预期的
 print("很抱歉无法邀请" + invite_friends.pop(invite_index) + "来吃晚餐了")
 else:
 print(friend_1 + " 来我家共进晚餐")
print(invite_friends)
print('-'*5)
#已经吃过饭了，朋友都走了，删除列表中其余的元素
for friend_2 in invite_friends[::-1]:
 #和上面一样也需要从后往前删，列表会变短，索引会递增
 invite_friends.remove(friend_2)

print(invite_friends)

程序执行结果：

邀请 Python 与我共进晚餐

邀请 Java 与我共进晚餐

邀请 PHP 与我共进晚餐

PHP无法赴约

['Python', 'Java', 'Go']

-----

我找到了更大的餐桌，可以邀请更多的人来晚餐

['Kali', 'Python', 'CentOS', 'Java', 'Go', 'Redhat']

-----

新餐桌没有送达位置不够，现在我只能邀请Python和Redhat来我家吃晚餐

Redhat 来我家共进晚餐

很抱歉无法邀请Go来吃晚餐了

很抱歉无法邀请Java来吃晚餐了

很抱歉无法邀请CentOS来吃晚餐了

Python 来我家共进晚餐

很抱歉无法邀请Kali来吃晚餐了

['Python', 'Redhat']

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