Python List截取用法介绍

# 获取list的前3个元素
fruits = ["apple", "banana", "cherry", "date", "elderberry"]
result = fruits[0:3]
print(result)

['apple', 'banana', 'cherry']

# 获取list的最后2个元素
fruits = ["apple", "banana", "cherry", "date", "elderberry"]
result = fruits[-2:]
print(result)

['date', 'elderberry']

# 获取list的中间3个元素
fruits = ["apple", "banana", "cherry", "date", "elderberry"]
result = fruits[1:4]
print(result)

['banana', 'cherry', 'date']

# 获取list的第一个元素
fruits = ["apple", "banana", "cherry", "date", "elderberry"]
result = fruits[0]
print(result)

apple

# 获取list的倒数第二个元素
fruits = ["apple", "banana", "cherry", "date", "elderberry"]
result = fruits[-2]
print(result)

date