pop()是Python中的內置函數，可從列表或給定的索引值中刪除並返回最後一個值。
用法:
list_name.pop(index)
參數：
index (optional) - The value at index is popped out and removed. If the index is not given, then the last element is popped out and removed.
返回值：
The last value or the given index value from the list
異常：
When index is out of range, it returns IndexError
代碼1：
# Python3 program for pop() method
list1 = [ 1, 2, 3, 4, 5, 6 ]
# Pops and removes the last element from the list
print(list1.pop())
# Print list after removing last element
print("New List after pop:", list1, "\n")
list2 = [1, 2, 3, ('cat', 'bat'), 4]
# Pop last three element
print(list2.pop())
print(list2.pop())
print(list2.pop())
# Print list
print("New List after pop:", list2, "\n")輸出：
6
New List after pop: [1, 2, 3, 4, 5]
4
('cat', 'bat')
3
New List after pop: [1, 2]
代碼2：
# Python3 program showing pop() method
# and remaining list after each pop
list1 = [ 1, 2, 3, 4, 5, 6 ]
# Pops and removes the last
# element from the list
print(list1.pop(), list1)
# Pops and removes the 0th index
# element from the list
print(list1.pop(0), list1)輸出：
6 [1, 2, 3, 4, 5] 1 [2, 3, 4, 5]
代碼3： IndexError
# Python3 program for error in pop() method
list1 = [ 1, 2, 3, 4, 5, 6 ]
print(list1.pop(8))輸出：
Traceback (most recent call last):
File "/home/1875538d94d5aecde6edea47b57a2212.py", line 5, in
print(list1.pop(8))
IndexError:pop index out of range
實際示例：
列表中的水果包含fruit_name和表示其水果的屬性。另一個清單上的消費有兩項果汁和食物。借助pop()和append()，我們可以做一些有趣的事情。
# Python3 program demonstrating
# practical use of list pop()
fruit = [['Orange','Fruit'],['Banana','Fruit'], ['Mango', 'Fruit']]
consume = ['Juice', 'Eat']
possible = []
# Iterating item in list fruit
for item in fruit:
# Inerating use in list consume
for use in consume:
item.append(use)
result.append(item[:])
item.pop(-1)
print(result)輸出：
[['Orange', 'Fruit', 'Juice'], ['Orange', 'Fruit', 'Eat'], ['Banana', 'Fruit', 'Juice'], ['Banana', 'Fruit', 'Eat'], ['Mango', 'Fruit', 'Juice'], ['Mango', 'Fruit', 'Eat']]
注：本文由純淨天空篩選整理自Striver大神的英文原創作品 Python list | pop()。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。