save project

test.py

+file = open(r"C:\yyy\qwertyuiop.txt","w",encoding="utf-8")
+file.write("小强:10本\n")
+file.close()
+
+
+
+
+new_file=""
+with open(r"C:\yyy\qwertyuiop.txt","r",encoding="utf-8") as file:
+    for line in file:
+        if "小强:10本" in line:
+            line = line.replace("小强:10本","小强:11本")
+        new_file +=line
+with open(r"C:\yyy\qwertyuiop.txt","w",encoding="utf-8") as file:
+    file.write(new_file)
\ No newline at end of file