save project

diy.py

@@ -7,6 +7,19 @@
 # n.close()
 
 
+# with open(r"C:\Users\Administrator\Desktop\test.txt",'r',encoding='utf-8') as n:
+#     a = n.read()
+#     print(a)
+
+new_data=''
+with open(r"C:\Users\Administrator\Desktop\test.txt",'r',encoding='utf-8') as n:
+    for data in n:
+        if '张三：100本' in data:
+            data=data.replace('张三：100本','张三：10本')
+            print('ihfpp')
+        new_data+=data
+with open(r"C:\Users\Administrator\Desktop\test.txt",'w',encoding='utf-8') as n:
+    n.write(new_data)
 with open(r"C:\Users\Administrator\Desktop\test.txt",'r',encoding='utf-8') as n:
     a = n.read()
     print(a)