05 2021 档案

摘要：class Account: def __init__(self,name,account_number,initial_amount): self._name = name self._card_no = account_number self._balance = initial_amount 阅读全文

摘要：with open('data1_1.txt', 'r', encoding = 'utf-8') as f: data = f.readlines() n = 0 for line in data: if line.strip('\n') == '': continue n += 1 print( 阅读全文