save project

da.py

+new_data=''
+with open(r"C:\Users\EDZ\Desktop\book.txt","r",encoding="utf-8") as a:
+    for data in a:
+        if "小强:12本"in data:
+            data=data.replace('小强:12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"C:\Users\EDZ\Desktop\book.txt","w",encoding="utf-8") as a:
+    a.write(new_data)
+with open(r"C:\Users\EDZ\Desktop\book.txt","r",encoding="utf-8") as a:
+    d=a.read()
+    print(d)
\ No newline at end of file