save project

diy.py

@@ -4,10 +4,23 @@
     #a.write('小丽：11本\n')
     #a.write('李文：9本\n')
     #a.write('小强:10本\n')
-with open(r'C:\Users\Administrator\Desktop\test.txt','r',encoding='utf-8') as a:
-    for b in a:
-        if '小强:10本' in b:
-            print('小强在文件中')
-        if '小兰：12本' in b:
-            print('小兰在文件中')
-    print(b)
\ No newline at end of file
+#with open(r'C:\Users\Administrator\Desktop\test.txt','r',encoding='utf-8') as a:
+#    for b in a:
+#        if '小强:10本' in b:
+#            print('小强在文件中')
+#        if '小兰：12本' in b:
+#            print('小兰在文件中')
+#    print(b)
+new_data=''
+with open(r'C:\Users\Administrator\Desktop\test.txt','r',encoding='utf-8') as b:
+    for data in b:
+        if "小强:10本" in data:
+            data = data.replace('小强:10本','小强:11本')
+        if '小兰:12本' in data:
+            data = data.replace('小兰:12本','小兰:14本')
+        new_data += data
+with open(r'C:\Users\Administrator\Desktop\test.txt','w',encoding='utf-8') as b:
+    b.write(new_data)
+with open(r'C:\Users\Administrator\Desktop\test.txt','r',encoding='utf-8') as b:
+    c=b.read()
+    print(c)
\ No newline at end of file