一、处理多个条件语句
all()方法
对于all()的一般例子如下:
size = "lg"
color = "blue"
price = 50
# bad practice
if size == "lg" and color == "blue" and price < 100:
print("Yes, I want to but the product.")更好的处理方法如下:
# good practice
conditions = [
size == "lg",
color == "blue",
price < 100,
]
if all(conditions):
print("Yes, I want to but the product.")对于any()的一般例子如下:
# bad practice
size = "lg"
color = "blue"
price = 50
if size == "lg" or color == "blue" or price < 100:
print("Yes, I want to but the product.")更好的处理方法如下:
# good practice
conditions = [
size == "lg",
color == "blue",
price < 100,
]
if any(conditions):
print("Yes, I want to but the product.")
二、list去重
set() 来删除重复元素
lst = [1, 2, 3, 4, 3, 4, 4, 5, 6, 3, 1, 6, 7, 9, 4, 0]
print(lst)
unique_lst = list(set(lst))
print(unique_lst)
三、找到list中重复最多的元素
用 max( ) 函数
lst = [1, 2, 3, 4, 3, 4, 4, 5, 6, 3, 1, 6, 7, 9, 4, 0]
most_repeated_item = max(lst, key=lst.count)
print(most_repeated_item)
https://mp.weixin.qq.com/s/qyadrP-r6SnuHiGtw4TiuQ