pop()方法用于从列表中删除指定索引/位置处的元素，此方法与该列表（我们必须从中删除元素的列表）一起调用，索引作为参数提供。
语法：
list_name.pop(index)
Parameter(s)：
index –这是一个可选参数，它表示列表中的索引，我们必须删除该元素。如果我们不提供该值，那么它的默认值将是-1，代表最后一项。
返回值：
此方法的返回类型是元素的类型，它返回移除的元素。
范例1：
# 带有示例的Python列表pop()方法
# 宣布名单
cars = ["BMW", "Porsche", "Audi", "Lexus", "Audi"]
# 打印清单
print("cars before pop operations...")
print("cars: ", cars)
# 从第二个索引中删除元素
x = cars.pop(2)
print(x,"is removed")
# 从第0个索引中删除元素
x = cars.pop(0)
print(x,"is removed")
# 打印清单
print("cars before pop operations...")
print("cars: ", cars)输出结果
cars before pop operations... cars: ['BMW', 'Porsche', 'Audi', 'Lexus', 'Audi'] Audi is removed BMW is removed cars before pop operations... cars: ['Porsche', 'Lexus', 'Audi']
范例2：
# 带有示例的Python列表pop()方法
# 宣布名单
x = [10, 20, 30, 40, 50, 60, 70]
# 打印清单
print("x before pop operations...")
print("x: ", x)
res = x.pop(0) # 将删除第0个元素
print(res,"is removed")
res = x.pop() # 将删除最后一个元素
print(res,"is removed")
res = x.pop(-1) # 将删除最后一个元素
print(res,"is removed")
# 打印清单
print("x after pop operations...")
print("x: ", x)输出结果
x before pop operations... x: [10, 20, 30, 40, 50, 60, 70] 10 is removed 70 is removed 60 is removed x after pop operations... x: [20, 30, 40, 50]
如果索引超出范围，将返回“ IndexError”。
范例3：
# 带有示例的Python列表pop()方法
# 宣布名单
x = [10, 20, 30, 40, 50, 60, 70]
# 打印清单
print("x before pop operations...")
print("x: ", x)
res = x.pop(15) # 将返回错误
print(res," is removed")
# 打印清单
print("x after pop operations...")
print("x: ", x)输出结果
x before pop operations... x: [10, 20, 30, 40, 50, 60, 70] Traceback (most recent call last): File "main.py", line 10, in <module> res = x.pop(15) # 将返回错误 IndexError: pop index out of range