#Auther Bob
#--*--conding:utf-8 --*--
name_list = []
tmp_list = []
info_list = []
f = open("homeworkdb","r",encoding="utf-8")
for line in f:if line.startswith("backend"):tmp_list = (line.strip().split(" "))# name_list.append(tmp_list[1])# print(tmp_list)name_list.append(tmp_list[1])f.close()
flag = 0
# print(name_list)
while True:option = int(input("1:查询用户信息\n2:删除用户信息\n3:增加用户信息\n4:退出\n"))if option == 1:name = input("please input name:")if name in name_list:with open("homeworkdb","r",encoding="utf-8") as f:for line in f:if flag == 0 and line.strip() == "backend " + name:flag = 1continueif flag == 1 and not line.startswith("backend"):info_list.append(line.strip())if flag == 1 and line.startswith("backend"):flag = 0continueprint("%s的信息是：" %(name))for info in info_list:print(info)info_list = []else:print("%s is not in list" %(name))continueelif option == 2:name = input("please in name:")if name in name_list:with open("homeworkdb","r",encoding="utf-8") as f1,open("tmp","w",encoding="utf-8") as f2:for line in f1:if flag == 0 and line.strip() == "backend " + name:flag = 1continueif flag == 1 and not line.startswith("backend"):continueif flag == 1 and line.startswith("backend"):flag = 0if flag == 0:f2.write(line)with open("homeworkdb","w",encoding="utf-8") as f1,open("tmp","r",encoding="utf-8") as f2:for line in f2:f1.write(line)name_list.remove(name)with open("homeworkdb","r",encoding="utf-8") as f1,open("tmp","w",encoding="utf-8") as f2:for line in f1:if line == "\n":continueelse:f2.write(line)with open("tmp","r",encoding="utf-8") as f1,open("homeworkdb","w",encoding="utf-8") as f2:for line in f1:f2.write(line)else:print("%s is not in list" %(name))continueelif option == 3:name = input("please in name:")if name in name_list:print("%s is in list" % (name))info = input("please input %s is information" % (name))with open("homeworkdb" ,"r",encoding="utf-8") as f1:for line in f1:if flag == 0 and line.strip() == "backend " + name:flag = 1continueif flag == 1 and not line.startswith("backend"):info_list.append(line.strip())if flag == 1 and line.startswith("backend"):flag = 0continue# print(info_list)if info in info_list:print("%s is already exist" %(info ))else:with open("homeworkdb","r",encoding="utf-8") as f1,open("tmp","w",encoding="utf-8") as f2:flag = 0for line in f1:# print(flag)if flag == 0 and line.strip() == "backend " + name:f2.write(line)tmp_info ="     " + info + "\n"f2.write(tmp_info)else:f2.write(line)with open("tmp","r",encoding="utf-8") as f1,open("homeworkdb","w",encoding="utf-8") as f2:for line in f1:f2.write(line)else:print("%s is not in list" %(name))info = input("please input %s is information" % (name))with open("homeworkdb","a",encoding="utf-8") as f1:s1 = "\n" + "backend " + names2 = "\n" + "     " + infof1.write(s1)f1.write(s2)name_list.append(name)elif option == 4:exit()else:print("invalid input,please input[1|2|3|4]")continue