auto save

diy.py

@@ -7,6 +7,19 @@
 # filel.write('小强：12本\n')
 # filel.write('小强：12本\n')
 # filel.write('李明：15本\n')
 # filel.write('李明：15本\n')
 # filel.close()
 # filel.close()
+#with open(r"C:\Users\mayi_robot\Desktop\test.txt",'r',encoding='utf-8') as filel:
+#    a = filel.read()
+#    print(a)
+newb=''
 with open(r"C:\Users\mayi_robot\Desktop\test.txt",'r',encoding='utf-8') as filel:
 with open(r"C:\Users\mayi_robot\Desktop\test.txt",'r',encoding='utf-8') as filel:
-    a = filel.read()
+    for b in filel:
+        if '小强：12本'in b:
+            b=b.replace('小强：12本','小强：11本')
+        if '小兰：12本'in b:
+            b=b.replace('小兰：12本','小兰：14本')
+        newb+=b
+with open(r"C:\Users\mayi_robot\Desktop\test.txt",'w',encoding='utf-8') as filel:
+    filel.write(newb)
+with open(r"C:\Users\mayi_robot\Desktop\test.txt",'r',encoding='utf-8') as filel:
+    a=filel.read()    
     print(a)
     print(a)
\ No newline at end of file