save project

diy.py

@@ -6,7 +6,17 @@
 # file1.write('张伟：16本\n')
 # file1.write('192')
 # file1.close()
+new_data = ''
+with open(r'C:\Users\xiaowen\Desktop\test.txt','r',encoding = 'utf-8') as file1:
+    #file1.write('小刚：250本\n')
+    #file1.write('小明：54250本\n')
+    for data in file1:
+        if '李文：9本'in data:
+            data = data.replace('李文：9本','李文：10本')
+        new_data = new_data + data
 
-with open(r'C:\Users\xiaowen\Desktop\test.txt','a',encoding = 'utf-8') as file1:
-    file1.write('小刚：250本\n')
-    file1.write('小明：54250本\n')
\ No newline at end of file
+with open(r'C:\Users\xiaowen\Desktop\test.txt','w',encoding = 'utf-8') as file1:
+    file1.write(new_data)
+with open(r'C:\Users\xiaowen\Desktop\test.txt','r',encoding = 'utf-8') as file1:
+    a = file1.read()
+    print(a)
\ No newline at end of file