auto save

diy.py

+
+#file1.write('张伟：16本\n')
+#file1.write('张伟：16本\n')
+#file1.close()
+#\Dwith open(r"C:\Users\Administratoresktop\test.txt",","aencoding="utf-8") as file1:
+#    file1.write('小明:5本\n')
+with open(r'C:\Users\Administrator\Desktop\test.txt','r',encoding='utf-8') as file1:
+    for data in file1:
+        if '小兰：12本' in date:
+            data.replace('小兰：9本','小兰：2135165123546854156本')
+        new_date +=date
+with open(r'C:\Users\Administrator\Desktop\test.txt','w',encoding='utf-8') as file1:
+    file1.write(new_date)
+
+with open(r'C:\Users\Administrator\Desktop\test.txt','r',encoding='utf-8') as file1:
+    a=file1.read()
+    print(a)
\ No newline at end of file