Just learn the python, practice the Code

1 #Coding:utf-82 ImportOS3  #declare an empty list store the name of the learner4Member_list = []5 #reads local file raw data, adds local data to member_list, and does not guarantee the second run Member_list6 ifOs.path.exists ('Student.txt'):7File_test = open ('Student.txt','R')8Name_list =File_test.readlines ()9     #The name in the name_list is processed to remove \ n from the nameTen      forNameinchname_list: Oneres = Name.strip ('\ n') A         #Add the name of the processing complete to member-list - member_list.append (RES) - file_test.close () the Else: -     Print 'file does not exist!' -  while1: -     Print""" + 1. Add student name - 2. Change the student's name + 3. Check the student's name A 4. Delete student names at 0. Exit the program -       """ -Select_operation = input ('Please enter the operation number') -     #loop to determine if the input number exists -      whileSelect_operation<0orSelect_operation>4: -Select_operation = input ('number does not exist, please enter the operation number') in     #determine each number and set the appropriate logic -     ifSelect_operation = = 1: to         #Add Action +Member_name = Raw_input ('Please enter student name:') -         #add a name to the list the member_list.append (member_name) *         Print '-----added successfully \ n' $     elifSelect_operation = = 2:Panax Notoginseng         #Modify Student Name -         #first check all the student names, and then set the number of each student, easy to modify the          forXinchxrange (0,len (member_list)): +             #first remove each value of the list with X as the index, AName=Member_list[x] the             PrintX+1,' .', name +             #gets the learner number entered because the learner name information is to be modified according to the number. -Select_number = input ('Please enter the learner number to be modified:') $             #loop detection number is correct $          whileSelect_number < 1orSelect_number>Len (member_list): -Select_number = input ('The learner number does not exist, re-enter:') -                 #modifies the list's data based on the obtained number the                 #get the new learner name entered by the console -New_name = Raw_input ('Please enter the modified name:')WuyiMEMBER_LIST[SELECT_NUMBER-1] =new_name the         Print 'Data modification Successful!n' -     elifSelect_operation = = 3: Wu         Print '1-Query information based on learner ID' -         Print '2-Check all students' AboutSelect_number = input ('Please select a query operation:') $          whileSelect_number! = 1 andSelect_number!=2 : -Select_number = input ('Please re-select the query operation:') -         ifSelect_number ==1: -Number = input ('Please enter your enquiry number:') A              whileNumber < 1orNumber>Len (member_list): +Number = input ('The learner number does not exist, re-enter:') the             PrintMember_list[number-1] -         Else: $              forXinchxrange (0,len (member_list)): the                 #first remove each value of the list with X as the index, theName=Member_list[x] the                 PrintX+1,' .', name the     elifSelect_operation = = 4: -         Print '1-Delete by serial number' in         Print '2-Delete by name' the         Print '3-Delete all learners' theNumber = input ('Select Delete action:') About          whileNumber! = 1 andNumber! = 2 andNumber! = 3 : theNumber = input ('Select the correct delete operation:') the         ifNumber ==1: thenum = input ('Please enter the student number:') +              whileNum<0orNum>Len (member_list): -num = input ('Please enter the correct number of participants:')                    the member_list.pop (num)Bayi             Print 'Delete succeeded \ n' the         elifNumber = = 2: theName = Raw_input ('Please enter your name:') -             #determines whether the name is in the list, does not exist return true whole is established, if present returns flase condition is false -              whileName not inchmember_list: theName = Raw_input ('name does not exist, re-enter:') the member_list.remove (name) the             Print 'Delete succeeded \ n' the         Else: -              whileLen (member_list): the                 delMember_list[0] the             Print 'Delete succeeded \ n' the     Else:94         #Exit the          Break the     #since the Member_list list is updated, the data is kept up to date, and all the data in the list is written directly to the local file. theFile_test = open ('Student.txt','W')98      forXinchxrange (0,len (member_list)): AboutName =Member_list[x] -         #Once the name is taken out, each loop is once, and the name taken out is written locally. 101 file_test.write (name)102File_test.write ('\ n')103     #Close File104File_test.close ()

Just learn the python, practice the Code