Python列表推导式实现代码实例

#生成一个存放1-100中个位数为3的数据列表
# 普通写法
list =[]
for i in range(1,101):
  if i % 10 == 3:
    list.append(i)
print(list)
#列表推导
list1=[i for i in range(1,101) if i % 10==3]
print(list1)

#利用列表推到是将 列表中的整数提取出来[True, 17, "hello", "bye", 98, 34, 21]
values =[True, 33, "ll", "kk", 44, 34, 0]
#type（）校验数据类型
nums =[i for i in values if type(i) == int]
print(nums)

# 字典推导式：把字典中的key:value互换, {"b":"a","d":"c"}
dic = {"a":"b", "c":"d"}
new_dic = {dic[key]:key for key in dic} # key值是里面的 key = a,key = c
print(new_dic) # key = a,key = c dic[key] = b, d
 
lst1 = ["唐人街探案","Q","5颗星","悬疑"]
lst2 = ["电影", "第一", "评分", "类型"]
dic = {lst2[i]:lst1[i] for i in range(len(lst1))}
print(dic)