auto save

file.py

+# file1=open(r"C:\Users\我\Desktop\七下复习试卷\book.txt",'w',encoding='utf-8')
+# file1.write('小兰:12本\n')
+# file1.write('小丽:11本\n')
+# file1.write('李文:9本\n')
+# file1.write('张伟:16本\n')
+# file1.close()
+# file1=open(r"C:\Users\我\Desktop\七下复习试卷\book.txt",'w',encoding='utf-8')
+# file1.write('小强:10本\n')
+# file1.write('李明:5本\n')
+# file1.close()
+with open(r"C:\Users\我\Desktop\七下复习试卷\book.txt",'a',encoding='utf-8')as file1:
+    file1.write('小强:10本\n')
+    file1.write('李明:5本\n')
\ No newline at end of file