save project

diy.py

+# 写入同学们的捐赠明细：''、'小丽：11本'、'李文：9本'、'张伟：16本'
+#file1=open(r'C:\Users\mk008\Desktop\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()
+new_data=''
+with open(r'C:\Users\mk008\Desktop\book.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\mk008\Desktop\book.txt','w',encoding='utf-8') as file1:
+    file1.write(new_data)
+        
+            
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