1、从输入的字典中获取给定key的值，
实现函数：get_key_value(source_dict, key, index=0)，source_dict指给定的字典，key指需要获取的key字段，index指的是需要获取相同key的第几个值，从0开始，默认是0 

"""
File: 01dict取值.py
Author: chde_wang
Date: 2020-07-29 22：48：33
Description:从输入的字典中获取给定key的值，实现函数：get_key_value(source_dict, key, index=0)，source_dict指给定的字典，key指需要获取的key字段，index指的是需要获取相同key的第几个值，从0开始，默认是0。e.g: get_key_value（a, ‘id’, 2），返回值应该是：7554611
"""
a = {"code":200,"msg":"success","data":{"list":{"pay_column":[],"column":[{"id":6443650,"app_id":1561979372,"username":"qfhyadx","alias":"","title":"\u5de5\u5177","desc":"","img_url":"https:\/\/img-blog.csdnimg.cn\/20190927151132530.png","channel_id":0,"sum":16,"sort":6443650,"is_show":1,"status":1,"is_free":0,"is_delete":2,"status_count":"{\"1\":16}","created_at":"2019-08-26T04:19:51Z","updated_at":"2019-11-22T07:53:45Z","second":False,"edit_title":"\u5de5\u5177","column_subscribe_count":0,"column_url":"https:\/\/blog.csdn.net\/qfhyadx\/category_6443650.html","is_audit_pending":False},{"id":6459549,"app_id":1561979372,"username":"qfhyadx","alias":"","title":"\u968f\u7b14","desc":"","img_url":"https:\/\/img-blog.csdnimg.cn\/20190927151043371.png","channel_id":0,"sum":4,"sort":6459549,"is_show":1,"status":1,"is_free":0,"is_delete":2,"status_count":"{\"1\":4}","created_at":"2019-08-26T04:19:51Z","updated_at":"2020-07-19T21:49:55Z","second":False,"edit_title":"\u968f\u7b14","column_subscribe_count":0,"column_url":"https:\/\/blog.csdn.net\/qfhyadx\/category_6459549.html","is_audit_pending":False},{"id":7554611,"app_id":1561979372,"username":"qfhyadx","alias":"","title":"python3","desc":"","img_url":"https:\/\/img-blog.csdnimg.cn\/20190927151101105.png","channel_id":0,"sum":2,"sort":7554611,"is_show":1,"status":1,"is_free":0,"is_delete":2,"status_count":"{\"1\":2}","created_at":"2019-08-26T04:20:06Z","updated_at":"2020-07-13T19:41:03Z","second":False,"edit_title":"python3","column_subscribe_count":0,"column_url":"https:\/\/blog.csdn.net\/qfhyadx\/category_7554611.html","is_audit_pending":False}]},"total":3,"un_pass_total":0,"recycle_total":0}
}
# 递归调用def read_dict(input_dict, input_key, result_list):if input_dict:if isinstance(input_dict, dict):for key1, value1 in input_dict.items():if not isinstance(value1, (dict, list)):# 删减为空的时候if value1:if key1 == input_key:result_list.append(value1)else:read_dict(input_dict[key1], input_key, result_list)elif isinstance(input_dict, list):if input_dict:for i in range(len(input_dict)):if isinstance(input_dict[i], dict):for key2, value2 in input_dict[i].items():if not isinstance(value2, (dict, list)):# 删减为空的时候if value2:if key2 == input_key:result_list.append(value2)else:read_dict(input_dict[key2], input_key, result_list)else:print("您的输入不合法！")def get_key_value(source_dict, key, index=0):out_list = []read_dict(source_dict, key, out_list)if out_list and index >= 0:return out_list[index]else:return out_listinput_dict_value = "qw"
input_key_value = 'id'
num_value = 2
result = get_key_value(input_dict_value, input_key_value, num_value)
if result:print(result)

2 从文件中获取指定字符所在行数据。实现函数：check_string(file_path, key_word)，file_path代表文件所在路径，key_word代码搜索的关键字，返回符合条件的列表

"""
File: 03file取list.py
Author: chde_wang
Date: 2020-08-01 14：39：59
Description:从文件中获取指定字符所在行数据。
"""def check_string(file_path, key_word):""":param file_path: 代表文件所在路径:param key_word: 代码搜索的关键字:return: 返回符合条件的列表"""result_list = []try:with open(file_path, 'r') as f:for line in f.readlines():line = line.strip('\n')if line.find(key_word) != -1:result_list.append(line)except FileNotFoundError:print("文件不存在或者文件打开错误！")return result_listfind_s = "complate"
result_lst = []
result_lst = check_string("test.txt", find_s)
if not result_lst:print("您查找结果为空")
else:print("您查找结果为：", result_lst)