auto save

diy.py

 # 写入同学们的捐赠明细：'小兰：12本'、'小丽：11本'、'李文：9本'、'张伟：16本'
 # 写入同学们的捐赠明细：'小兰：12本'、'小丽：11本'、'李文：9本'、'张伟：16本'
+#file1=open('C:\\Users\\玛酷6\\Desktop\\test.txt','a',encoding='utf-8')
+#file1.write('小兰：12本')
+#file1.write('小丽：11本')
+# file1.write('李文：9本')
+# file1.close()
+# with open(r'C:\\Users\\玛酷6\\Desktop\\test.txt','r',encoding='utf-8') as file:
+#     file.write('小兰：12本')
+# file1=open('C:\\Users\\玛酷6\\Desktop\\test.txt','r',encoding='utf-8')
+# a=file1.read()
+# print(a)
+# file1.close()
+new_data='' 
+with open('C:\\Users\\玛酷6\\Desktop\\test.txt','r',encoding='utf-8') as file1:
+    for data in file1:
+        if'小强：10本'in data:
+            data=data.replace('小强：10本','小强：11本')
+        new_data+=data
+print(new_data)
+with open('C:\\Users\\玛酷6\\Desktop\\test.txt','w',encoding='utf-8') as file1:
+    file1.write(new_data)
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