jsonpath语法
https://blog.csdn.net/qq_41813208/article/details/112691362?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522165666162216780357254661%2522%252C%2522scm%2522%253A%252220140713.130102334..%2522%257D&request_id=165666162216780357254661&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2~all~top_click~default-2-112691362-null-null.142^v30^down_rank,185^v2^control&utm_term=jsonpath&spm=1018.2226.3001.4187
日期
datetime
import datetime<br>#以当前时间作为起始点,days=-7向前偏移7天,days=7向后偏移7天<br>time_now = datetime.datetime.now()<br>time = (time_now+datetime.timedelta(days=7)).strftime("%Y%m%d")<br>print(time)<br>
dateutil
安装dateutil库,注意不是pip install dateutil,而是pip install python-dateutil<br>import datetime<br>from dateutil.relativedelta import relativedelta<br>#以当前时间作为起始点,days=-7向前偏移7天,days=7向后偏移7天<br>time_now = datetime.datetime.now()<br>time = (time_now+datetime.timedelta(days=7)).strftime("%Y%m%d")<br>print(time)<br>#以当前时间为起始点,偏移一个月<br>time_1=(time_now+relativedelta(months=-1)).strftime("%Y%m%d")<br>print(time_1)
字典排序sorted
# 使用sorted函数的key参数实现字典的排序<br># 1. 创建一个包含20个学生名称及成绩的字典(字典推导式)<br>stucent_dict = {'stucent_%d' % i: randint(50, 100) for i in range(1, 21)}<br># 2. 使用sorted函数的参数key的方法对字典进行排序<br>stucent_tuplelist_sorted = sorted(stucent_dict.items(), key=lambda x: x[1], reverse=True)<br>print(stucent_tuplelist_sorted)<br># 3. 使用for循环重建排序后的字典<br>student_dic_sorted = {}<br>for key, value in stucent_tuplelist_sorted:<br> student_dic_sorted.setdefault(key, value)<br>print(student_dic_sorted)<br><br>'''<br>[('stucent_10', 98), ('stucent_6', 96), ('stucent_4', 94), ('stucent_5', 93), ('stucent_14', 90), ('stucent_17', 90), ('stucent_19', 89), ('stucent_18', 85), ('stucent_15', 84), ('stucent_1', 74), ('stucent_2', 74), ('stucent_20', 74), ('stucent_16', 71), ('stucent_12', 70), ('stucent_8', 67), ('stucent_3', 66), ('stucent_11', 56), ('stucent_13', 56), ('stucent_9', 54), ('stucent_7', 51)]<br><br>{'stucent_10': 98, 'stucent_6': 96, 'stucent_4': 94, 'stucent_5': 93, 'stucent_14': 90, 'stucent_17': 90, 'stucent_19': 89, 'stucent_18': 85, 'stucent_15': 84, 'stucent_1': 74, 'stucent_2': 74, 'stucent_20': 74, 'stucent_16': 71, 'stucent_12': 70, 'stucent_8': 67, 'stucent_3': 66, 'stucent_11': 56, 'stucent_13': 56, 'stucent_9': 54, 'stucent_7': 51}<br>'''