text: from getpass import getpass
  import os
  import pandas as pd
  import random
  
  
  def login():
  
      while True:
          try:
              databas = pd.read_csv("ClientLoginInfo.csv", sep=",",
                                    header=0)
              # databas.index
              # print(databas)
              loginid = databas["Client ID"]
              acc_no = databas["ACCOUNT No"]
              # print(loginid)
              i = 0
              while i < 5:
  
                  input_id = int(input("ENTER YOUR ACCOUNT NUMBER : "))
  
                  for index in acc_no.index:
                      dataid = acc_no[index]
                      # print(dataid, type(dataid))
                      # print(dataid == input_id)
                      if dataid == input_id:
                          idindex = index
                          loginid_client = loginid.loc[index]
                          # print(idindex)
  
                          print("ID is matched : ", dataid)
                          print()
                          while True:
                              password = getpass("ENTER YOUR PASSWORD : ")
                              if str(password) == str(databas.loc[idindex, "Password"]):
                                  print("PASSWORD MATCH")
                                  print()
                                  # START FROM HERE
                                  break
                              else:
                                  print()
                                  print("Password Incorrect !!!!! ")
                                  print()
                                  continue
                          break
                  else:
                      print()
                      print("INVALID ID !!!!! ")
                      print()
                      print("TRY AGAIN - ")
                      print()
                      i = i + 1
                      continue
                  break
  
              else:
                  print()
                  print("TRY AGAIN LATER")
                  os.abort()
  
              break
          except ValueError:
              print()
              print("TRY AGAIN !! ")
              print()
              # while True:
              continue
  
      return loginid_client
  
  
  def contain_digit(str):
      for i in str:
          if i.isdigit() == True:
              raise UnicodeError
  
  
  def registration():
      database = pd.read_csv("Client_Personal_Info.csv", sep=",", header=0)
      if len(database) == 0:
          l_index = 0
          last_client_id = 100
      else:
          l_index = database.tail(1).index[0]
          last_client_id = database.loc[l_index, "Client ID"]
  
      while True:
          acc_no_check = random.randrange(11111111, 99999999, 1)
          for p in database["ACCOUNT No"]:
              if (p == acc_no_check):
                  continue
          acc_no = acc_no_check
          break
  
      while True:
          try:
              first_name = input("Enter Your First Name : ").capitalize()
              last_name = input("Enter Your Last Name : ").capitalize()
              if len(first_name) <= 1 or len(last_name) <= 1:
                  print()
                  print("ENTER CORRECT NAME")
                  print()
                  continue
              contain_digit(first_name)
              contain_digit(last_name)
          except UnicodeError:
              print()
              print("TRY AGAIN")
              print()
              continue
          break
  
      cust_name = first_name + " " + last_name
  
      while True:
          try:
              mobile_number_check = int(input("Enter Your Mobile Number : "))
              if len(str(mobile_number_check)) == 10:
  
                  if mobile_number_check in list(database.loc[:, "Mobile Number"]):
                      print('ALREADY USED')
                      print()
                      continue
                  else:
                      print("DONE ")
                      print()
                      mobile_number = mobile_number_check
                      break
  
              else:
                  print("ENTER VALID ! ")
                  print()
                  continue
          except:
              print("ENTER VALID NUMBER ")
              print()
              continue
  
      add = input("Enter Your Address : ")
  
      client_id = last_client_id + 1
      List = [client_id, acc_no, cust_name, mobile_number, add]
      database.loc[l_index + 1] = List
  
      login_database = pd.read_csv("ClientLoginInfo.csv")
      l_login_index = len(login_database) + 1
  
      while True:
          password = input("ENTER PASSWORD :")
          if len(password) < 8:
              print("RETRY WITH MORE THEN 8 CHARACTERS !")
              print()
              continue
          con_pass = input("CONFIRM PASSWORD :")
          if len(password) >= 8 and password == con_pass:
              # login page
              print("THANKS FOR REGISTRATION")
              print()
              login_database.loc[l_login_index] = [
                  client_id, acc_no, password]
              break
          else:
              print("TRY AGAIN !")
              print()
              continue
      print("*********************************")
      print("YOUR ACCOUNT NUMBER IS :", acc_no)
      print(f"Your CLIENT ID IS : {client_id}")
      print("*********************************")
      print()
  
      database.to_csv('Client_Personal_Info.csv', index=False)
      login_database.to_csv('ClientLoginInfo.csv', index=False)
  
  
  while True:
      print("\t     *-----*-------------------------*-----*")
      print("\t     |     | WELCOME TO EASY FINANCE |     |")
      print("\t     |     *-------------------------*     |")
      print("\t     |                                     |")
      print("\t     |          1)Login                    |\n\t     |          2)Registration             |")
      print("\t     |                                     |")
      print("\t     *-------------------------------------*")
      print()
      client_chos = input("ENTER YOUR CHOICE : ")
  
      if client_chos == "1" or "login" == client_chos.lower():
          clientid = login()
          break
      elif client_chos == "2" or "registration" == client_chos.lower():
          registration()
          print("NOW YOU HAVE TO LOGIN !!! ")
          print()
          clientid = login()
          break
      else:
          print("TRY AGAIN !")
          print()
  