save project

qwertyui.py

-with open(r"C:\Users\Administrator\Desktop\text.txt","r",encoding="utf-8") as file1:
-    #file.write("123456789012345678901234567890\n")
-    #file.write("098765432109876543210987654321\n")
-    for data in file1:
-        if '098765432109876543210987654321'in data:
-            print('TM的在！！！！！！！')
+with open(r"C:\Users\Administrator\Desktop\text.txt","w",encoding="utf-8") as file1:
+    file1.write("123\n")
+    file1.write("321\n")
+#    for data in file1:
+#        if '123'in data:
+#            print('TM的在！！！！！！！')
\ No newline at end of file

qwertyuqwerti.py

+new_data=''
+with open(r"C:\Users\Administrator\Desktop\text.txt","r",encoding="utf-8") as file1:
+    for data in file1:
+        if '123' in data:
+           data=data.replace('123','321')
+        new_data+=data
+with open(r"C:\Users\Administrator\Desktop\text.txt","w",encoding="utf-8") as file1:
+    file1.write(new_data)
+with open(r"C:\Users\Administrator\Desktop\text.txt","r",encoding="utf-8") as file1:
+    a=file1.read()
+    print(a)
\ No newline at end of file