save project

1.py

-def new_input():
-    total=[]
-    while True:
-        unit = input('伞兵,你要吃什么(q退出)')
-        if unit == 'q':
-             break
-        else:
-            try:
-                unit = int(unit)
-            except:
-                print('请重新输入，')
-            else:    
-                total.append(unit)
-            finally:
-                print('============================')
-    return total                 
-def sum(money): 
-    count = 0
-    for i in money:
-        count = count + i
-    return count
-price = new_input()
-pay = sum(price)
-print('您一共消费了' + str(pay) + '元.扫码还是现金？' )   
\ No newline at end of file
+filel=open(r'D:\LYQ/testf.txt','w',encoding='utf-8')
+filel.write('小李:10本\n')
+filel.write('晓丽:12本\n')
+filel.write('小丽:8本\n')
+filel.write('小利:7本\n')
+filel.close()
\ No newline at end of file

2.py

-try:
-    age = int(input('你今年几岁'))
-except:
-    print('要输入整数啊')
-else:
-    if age<18:
-        print('不可以喝酒噢')
-print('程序结束~')
\ No newline at end of file
+new_data=''
+with open(r'D:\LYQ/testf.txt','r',encoding='utf-8') as filel:
+    for data in filel:
+        if '小李:10本' in data:
+            print('小李数据在文件中')
+            data=data.replace('小李:10本','小李:11本')
+        new_data += data
+
+with open(r'D:\LYQ/testf.txt','w',encoding='utf-8') as filel:
+    filel.write(new_data)
+with open(r'D:\LYQ/testf.txt','r',encoding='utf-8') as filel:
+    a=filel.read()
+    print(a)    
\ No newline at end of file