实验6 文件应用编程-2
def is_valid(y): if len(y)==18: y1=y[:17] if y1.isdigit(): for j in y: y2=[] y2.append(j) m=['1','2','3','4','5','6','7','8','9','X'] if y[-1] in m: return True else: return False else: return False else: return False with open('data3_id.txt','r',encoding='utf-8')as f: data=f.readlines() list=[] for i in data: datas=i.strip('\n') if is_valid(datas[3:])==True: list.append(datas) list.sort(key=lambda y:y[9:13]) for m in list: print(f'{m[:2]},{m[9:13]}-{m[13:15]}-{m[15:17]}')
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())
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, "^"))