save project

diy.py

@@ -6,7 +6,7 @@ a.write("李文：9本\n")
 a.write("张伟：16本\n")
 a.write("张伟：16本\n")
 a.close()
 a.close()
 a=open(r"D:\Desktop\book.text","a",encoding="utf-8")
 a=open(r"D:\Desktop\book.text","a",encoding="utf-8")
-a.write("小强：12本\n")
+a.write("小强：10本\n")
 a.write("李明：15本\n")
 a.write("李明：15本\n")
 a.close()
 a.close()
 a=open(r"D:\Desktop\book.text","r",encoding="utf-8")
 a=open(r"D:\Desktop\book.text","r",encoding="utf-8")
@@ -15,3 +15,16 @@ for data in a:
         print("小强数据在文件里")
         print("小强数据在文件里")
     if "小兰：12本" in data:
     if "小兰：12本" in data:
         print("小兰数据在文件里")
         print("小兰数据在文件里")
+new_data=""
+with open(r"D:\Desktop\book.text","r",encoding="utf-8")as a:
+    for data in a:
+        if"小强：10本"in data:
+            data=data.replace("小强：10本","小强：11本")
+        if"小兰：12本"in data:
+            data=data.replace("小兰：12本","小兰：14本")
+        new_data+=data
+with open(r"D:\Desktop\book.text","w",encoding="utf-8") as a:
+    a.write(new_data)
+with open(r"D:\Desktop\book.text","r",encoding="utf-8") as a:
+    b=a.read()
+    print(b)