save project

1.py

+file1=open(r'C:\Users\Administrator\Desktop\test.txt','w',encoding='utf-8')
+file1.write('小兰:12本\n')
+file1.write('小凯:12本\n')
+file1.write('小鸡:12本\n')
+file1.close()
+with open(r'C:\Users\Administrator\Desktop\test.txt','a',encoding='utf-8') as file:
+    file.write('小一:12本\n')
+    file.write('小机:12本\n')
+    file.write('小坤:12本\n')
+new_data=''
+with open(r'C:\Users\Administrator\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
+with open(r'C:\Users\Administrator\Desktop\test.txt','w',encoding='utf-8') as file1:
+    file1.write(new_data)
+
+
+
+ 
\ No newline at end of file