我要评论# 1、编写文件修改功能，调用函数时，传入三个参数（修改的文件路径，要修改的内容，修改后的内容）
# 既可完成文件的修改
import os
import time
def change_filepath(file_path, org_txt, new_txt):
file_path = "%s\.copy.txt" % file_path
with open("new.txt", mode="rt", encoding="utf-8")as f1, \
open(file_path, mode="wt", encoding="utf-8")as f2:
data = f1.read()
change_txt = data.replace(org_txt, new_txt)
f2.write(change_txt)
os.remove(file_path)
os.rename(file_path, 'new2.txt')
# change_filepath(file_path=r'E:\Python15期\Day 11 函数', org_txt="2548", new_txt="牛牛牛")
# 2、编写记录tail工具生成
def generate_log(): # 日志生成
for i in range(1, 9999):
with open("logs.txt", "at", encoding="utf-8")as f:
f.write(f"正在记录第{i}次日志记录............\n")
time.sleep(2)
def record_tail(): # 记录日志
with open("logs.txt", "rb")as f:
f.seek(0, 2)
while True:
data = f.readline()
if len(data) == 0:
pass
else:
print(data.decode("utf-8"))
time.sleep(0.5)
# 3、编写登录功能
def log_in(i): # i 为重新输入密码的次数
user_id = input("请输入你的账号：").strip()
user_psd = input("请输入你的密码：").strip()
if user_id == "EGON" and user_psd == "123":
print("登录成功")
else:
if i == 0: # 输入次数达到上限 退出
print("你已经累计输错密码%s次，账户被锁定！" % 3)
else:
print("请输入正确的密码！")
return log_in(i - 1)
# log_in(3)
# 4、编写注册功能
# 敏感字符
sensitive_character = set()
for i in range(33, 48):
sensitive_character.add(chr(i))
def sign_up():
new_id = input("请输入你要注册的用户名：").strip()
new_psd = input("请输入你要注册的密码：").strip()
new_psd2 = input("请再次输入你的密码").strip()
set_newid = set(new_id)
if new_psd != new_psd2:
print("两次输入密码不一致，请重新输入")
else:
if sensitive_character & set_newid != set():
print("你注册的用户名不符合规范！")
sign_up()
if len(new_psd) < 6:
print("你输入的密码太短了！")
sign_up()
else:
print("恭喜你登录成功！")
with open("newuser.txt", mode="at", encoding="utf-8") as f:
f.write("%s:%s\n" % (new_id, new_psd))
# 5、编写用户认证功能 检验
def tset_id():
user_name = input("请输入你要检验的账号：")
names = []
with open(r"C:\Users\S\Desktop\userdata.txt", "rt", encoding="utf-8") as f:
for line in f:
name = line.strip("\n").split(":")[0]
names.append(name)
print(names)
if user_name in names:
print("用户名已被注册！")
else:
print("用户名可用。")
#
# tset_id()
# 选做题：编写ATM程序实现下述功能，数据来源于文件db.txt
# 1、充值功能：用户输入充值钱数，db.txt中该账号钱数完成修改
# 2、转账功能：用户A向用户B转账1000元，db.txt中完成用户A账号减钱，用户B账号加钱
# 3、提现功能：用户输入提现金额，db.txt中该账号钱数减少
# 4、查询余额功能：输入账号查询余额
def atm_function():
print("""请输入你要进行的操作:
1: 充值
2: 转账
3: 提现
4: 查询""")
user = input("请输入你的账号：")
users = {}
# 创建db文件并写入数据
with open("db.txt", "wt", encoding="utf-8")as f1:
f1.write("A:999999\nB:888888\nC:777777\nD:666666\n")
# 读取db文件
with open("db.txt", "rt", encoding="utf-8")as f2:
for line in f2:
k, v = line.strip("\n").split(":")
users[k] = v
print(users)
def change_data(): # 改变数据
with open("db.txt", "wt", encoding="utf-8") as f:
for k, v in users.items():
f.write("%s:%s\n" % (k, v))
change_data()
cmd = input("请输入你的操作：")
if cmd == str(1):
top_up = input("请输入你要充值的金额：").strip()
users[user] = int(users[user]) + int(top_up)
elif cmd == str(2):
transfer_id = input("请输入你要转账的账户：").strip()
transfer_am = input("请输入你要转账的金额：").strip()
users[user] = int(users[user]) - int(transfer_am) # 原用户减少
users[transfer_id] = int(users[transfer_id]) + int(transfer_am) # 受益用户
change_data()
elif cmd == str(3):
withdraw = input("请输入你要提现的金额：").strip()
users[user] = int(users[user]) - int(withdraw)
change_data()
else:
print("请输入正确的操作！")
atm_function()
# atm_function()
# 选做题中的选做题：登录功能
# 用户登录成功后，内存中记录下该状态，上述功能以当前登录状态为准，必须先登录才能操作
def log_in(i): # i 为重新输入密码的次数
user_id = input("请输入你的账号：").strip()
user_psd = input("请输入你的密码：").strip()
def record_logdata(): # 内建函数
with open("logdata.txt", "at", encoding="utf-8") as f:
f.write("%s登陆成功！登陆次数为%s\n" % (user_id, abs(4 - i)))
if user_id == "EGON" and user_psd == "123":
print("登录成功")
record_logdata()
else:
if i == 0: # 输入次数达到上限 退出
print("你已经累计输错密码%s次，账户被锁定！" % 3)
else:
print("请输入正确的密码！")
return log_in(i - 1)
# log_in(3)
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