save project

diy.py

 # 写入同学们的捐赠明细：'小兰：12本'、'小丽：11本'、'李文：9本'、'张伟：16本'
+newdata=""
 file=open(r"C:\Users\86150\Desktop\text.txt","w",encoding='utf-8')
 
 file.write('小兰：12本\n')
@@ -9,10 +10,10 @@ file.write('张伟：16本\n')
 file.close()
 
 with open(r"C:\Users\86150\Desktop\text.txt","a",encoding='utf-8') as file:
-    file.write('小明：10本\n')
+    file.write('小强：10本\n')
     file.write('小张：15本\n')
 
-with open(r"C:\Users\86150\Desktop\text.txt","r",encoding='utf-8') as file:
+with open(r"C:\Users\86150\Desktop\text.txt","a",encoding='utf-8') as file:
     a=file.read()
     print(a)
     file.close()
@@ -20,9 +21,25 @@ with open(r"C:\Users\86150\Desktop\text.txt","r",encoding='utf-8') as file:
 with open(r"C:\Users\86150\Desktop\text.txt","r",encoding='utf-8') as file:
     for data in file:
         if "小强：10本" in data:
-            print("小强数据在文件中")
+            data=data.replace("小强：10本","小强：11本")
+            newdata+=data
         if "小兰：12本" in data:
             print("小兰数据在文件中")
         else:
             print("数据不在文件中")
             break
+
+with open(r"C:\Users\86150\Desktop\text.txt","w",encoding='utf-8') as file:
+    file.write(newdata)
+
+with open(r"C:\Users\86150\Desktop\text.txt","r",encoding='utf-8') as file:
+    a=file.read()
+    print()
+
+with open(r"C:\Users\86150\Desktop\text.txt","r",encoding='utf-8') as file:
+    for data in file:
+        if "小强：10本" in data:
+            data=data.replace("小强：10本","小强：11本")
+            newdata+=data
+with open(r"C:\Users\86150\Desktop\text.txt","w",encoding='utf-8') as file:
+    file.write(newdata)