save project

diy.py

@@ -3,9 +3,23 @@
 #abc.write('小兰：12本\n小丽：11本\n李文：9本\n张伟：16本\n')
 #abc.close()
 
-with open(r'C:\Users\admin\Desktop\book.txt','a',encoding='utf-8') as abc:
-    abc.write('小强：10本\n李明：15本\n')
+#with open(r'C:\Users\admin\Desktop\book.txt','a',encoding='utf-8') as abc:
+    #abc.write('小强：10本\n李明：15本\n')
+#with open(r'C:\Users\admin\Desktop\book.txt','r',encoding='utf-8') as abc:  
+    #for date in abc:
+        #if '小强：10本'  in date:
+            #print('zai') 
+new_date=''
 with open(r'C:\Users\admin\Desktop\book.txt','r',encoding='utf-8') as abc:  
     for date in abc:
         if '小强：10本' in date:
-            print('zai')    
+            date=date.replace('小强：10本','小强：11本')
+        if '小兰：12本' in date:
+            date=date.replace('小兰：12本','小兰：14本')
+        new_date += date
+        
+with open(r'C:\Users\admin\Desktop\book.txt','w',encoding='utf-8') as abc:    
+    abc.write(new_date)
+with open(r'C:\Users\admin\Desktop\book.txt','r',encoding='utf-8') as abc:  
+    for i in abc:
+        print(i)