save project

1.py

@@ -7,9 +7,21 @@
 # with open (r"C:\Users\周\Desktop\123.txt","a",encoding='UTF-8') as aaa:
 #     aaa.write("小强：12\n")
 #     aaa.write("李明：15\n")
+# with open(r"C:\Users\周\Desktop\123.txt","r",encoding='UTF-8') as bbb:
+#     for q in bbb:
+#         if "小强：10" and "xiaox" in bbb:
+#             print("在其中")
+#         else:
+#             print("不在")
+aaa=""
 with open(r"C:\Users\周\Desktop\123.txt","r",encoding='UTF-8') as bbb:
     for q in bbb:
-        if "小强：10" and "xiaox" in bbb:
-            print("在其中")
-        else:
-            print("不在")
\ No newline at end of file
+        if "小强：10" in q:
+            q=q.replace("小强：10","小强：11")
+        if "小兰：12" in q:
+            q=q.replace("小兰：12","小兰：14")
+        aaa+=q 
+with open(r"C:\Users\周\Desktop\123.txt","w",encoding='UTF-8') as bbb:
+    bbb.write(aaa)
+
+