切片[1:3] 副本[:] 赋值

最新推荐文章于 2024-12-08 23:09:19 发布

原创最新推荐文章于 2024-12-08 23:09:19 发布 · 314 阅读

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博客围绕切片、副本和赋值展开，虽无具体内容，但推测会涉及信息技术领域中数据处理时这些操作的运用、特点及影响等关键信息。

players=['charles','martina','michael','florence','eli']
print(players[0:3])

print("\n")
players=['charles','martina','michael','florence','eli']
print(players[1:4])

print("\n")
players=['charles','martina','michael','florence','eli']
print(players[:4])

print("\n")
players=['charles','martina','michael','florence','eli']
print(players[2:])

print("\n")
players=['charles','martina','michael','florence','eli']
print(players[-3:])

print("\n")
players=['charles','martina','michael','florence','eli']
print("Here are the first three players on my team:")
for player in players[:3]:
	print(player.title())

print("\n")
my_foods=['pizza','falafel','carrot cake']
friend_foods=my_foods[:]
print("My favorite foods are:")
print(my_foods)

print("\nMy friend's favorite foods are:")
print(friend_foods)

print("\n")
my_foods=['pizza','falafel','carrot cake']
friend_foods=my_foods[:]
my_foods.append('cannoli')
friend_foods.append('ice cream')
print("My favorite foods are:")
print(my_foods)
print("\nMy friend's favorite foods are:")
print(friend_foods)

print("\n")
my_foods=['pizza','falafel','carrot cake']
friend_foods = my_foods
my_foods.append('cannoli')
friend_foods.append('ice cream')
print("My favorite foods are:")
print(my_foods)
print("\nMy friend's favorite foods are:")
print(friend_foods)

print("====")
players=['charles','martina','michael','florence','eli']
print("The first three items in the list are:")
print(players[:3])
print("Three items from the middle of the list are:")
print(players[1:4])
print("The last three items in the list are:")
print(players[-3:])

print("====")
my_foods=['pizza','falafel','carrot cake']
friend_foods = my_foods[:]
my_foods.append("new pizza")
friend_foods.append("new fpizza")
print("My favorite pizzas are:")
for value in my_foods:
	print(value)
print("My friend's favorite pizzas are:")
for value in friend_foods:
	print(value)
	
print("====")
my_foods=['pizza','falafel','carrot cake']
friend_foods = my_foods
my_foods.append('cannoli')
friend_foods.append('ice cream')
print("My favorite foods are:")
for value in my_foods:
	print(value)
print("\nMy friend's favorite foods are:")
for value in friend_foods:
	print(value)