实验六 文件应用编程-2
#test-3.py def is_valid(m): if len(m)==18 and m.isdigit(): return 'True' elif len(m)==18 and m[-1]=='X': return 'True' else: return 'False' with open('data3_id.txt','r',encoding = 'utf-8') as f: data = f.readlines() list = [] for i in data: data_ = i.strip('\n') if is_valid(data_[3:]) == 'True': list.append(data_) list.sort(key=lambda x: x[9:13]) for m in list: print('{},{}-{}-{}'.format(m[:2],m[9:13],m[13:15],m[15:17]))
#tesk5_1.py import random import datetime t = datetime.datetime.now() m = eval(input('输入随机抽点人数:')) with open('data5.txt', encoding = 'utf-8') as f: data = f.readlines() list = [] for i in range(m): x = random.choice(data) list.append(x) data.remove(x) filename = t.strftime('%Y%m%d') + '.txt' with open(filename, "w+", encoding="utf-8") as f: f.writelines(list) f.seek(0) print(f.read())
#tesk5-2.py import random import datetime t = datetime.datetime.now() print("{0:{1}{3}{2}}".format("抽点开始", "=", 40, "^")) list_ = [] while True: n = eval(input("输入随机抽点人数: ")) if n == 0: break else: with open("data5.txt", encoding="utf-8") as f: data = f.readlines() list = [] for i in range(n): x = random.choice(data) list.append(x) data.remove(x) with open("20220517.txt", "w+", encoding="utf-8") as f: f.writelines(list) f.seek(0) print(f.read()) list_ += list filename = t.strftime('%Y%m%d') + '.txt' with open(filename, "w", encoding="utf-8") as f: f.writelines(list_) print("{0:{1}{3}{2}}".format("抽点结束", "=", 40, "^"))
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