save project

diy.py

@@ -7,4 +7,23 @@
 # fill1.write('小强：10本\n李明：15本')
 # fill1.write('小强：10本\n李明：15本')
 # fill1.close()
 # fill1.close()
 
 
-# 
+# with open(r'C:\Users\Makcoo-Bellcode\Desktop\book.txt','r',encoding='utf-8') as fill1:
+#     for data in fill1:
+#         if '小强：10本' in data:
+#             print("数据在文件中")
+#         if '小兰：12本' in data:
+#             print("小兰在数据中")
+
+new_data=''
+with open(r'C:\Users\Makcoo-Bellcode\Desktop\book.txt','r',encoding='utf-8') as fill1:
+    for data in fill1:
+        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\Makcoo-Bellcode\Desktop\book.txt','w',encoding='utf-8') as fill1:
+    fill1.write(new_data)
+with open(r'C:\Users\Makcoo-Bellcode\Desktop\book.txt','r',encoding='utf-8') as fill1:
+    a=fill1.read()
+    print(a)
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