1.输入日期,判断这一天是这一年的第几天

import datetimedef day_of_year():    year = eval(input('请输入年份:'))    month = eval(input('请输入月份:'))    day = eval(input('请输入天:'))    date1 = datetime.date(year, month, day)    date2 = datetime.date(year, 1, 1)    return (date1 - date2).days + 1

2.打乱一个排好序的alist = [1, 3, 5, 7, 9]

import randomalist = [1, 3, 5, 7, 9]random.shuffle(alist)print(alist)

3.现有字典d = {‘a’:10, ‘b’:5, ‘c’:13, ‘d’:2},请根据字典的value值进行排序

d = {'a': 10, 'b': 5, 'c': 13, 'd': 2}a = sorted(d.items(), key=lambda x: x[1])print(a)

4.请反转字符串”live”

print("live"[::-1])

5.将字符串”a:1|b:2|c:3|d:4″处理成字典

a = "a:1|b:2|c:3|d:4"result = {}for item in a.split('|'):    k, v = item.split(':')    result[k] = eval(v)print(result)

6.给定两个列表,找出它们相同的元素和不同的元素

list1 = [1, 2, 3]list2 = [3, 4, 5]print("交集:", set(list1) & set(list2))print("差集:", set(list1) ^ set(list2))

7.设计实现遍历目录和子目录,抓取.docx文件

from glob import iglobdef func(path, suffix):    for i in iglob(f'{path}/**/*{suffix}', recursive=True):        print(i)if __name__ == '__main__':    func('D:/my_file', '.docx')

8.遍历列表时删除元素的正确做法

items = ['apple', 'banana', 'orange', 'pear', 'melon', 'grape']# 遍历在新的列表操作,删除是在原来的列表操作for item in items[:]:    items.remove(item)    print(items)

9. 统计一个文本中单词频次最高的10个单词

import reresult = {}with open('../doc/article.txt', 'r') as f:    for line in f:        word_list = re.findall('\w+', line)        for word in word_list:            if word in result.keys():                result[word] += 1            else:                result[word] = 1#学习中遇到问题没人解答?小编创建了一个Python学习交流群:711312441result = sorted(result.items(), key=lambda x: x[1], reverse=True)print(result[:10])

10.写出一个函数满足以下条件

该函数的输入是一个包含数字的list,输出一个新的list,其中每个元素满足以下条件:

  • 该元素是偶数
  • 该元素在原list中是在偶数的位置(index是偶数)
data_list = [1, 2, 5, 8, 10, 3, 18, 6, 20]even_list = [data for data in data_list[::2] if data % 2 == 0]print(even_list)