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'
+filel=open(r'C:\Users\Administrator\Desktop\test.txt','w',encoding='utf-8')
+filel.write('小丽:11本\n')
+filel.write('李文:9本\n')
+filel.write('张伟:16本\n')
+filel.close()
+with open(r'C:\Users\Administrator\Desktop\test.txt','a',encoding='utf-8')as file:
+    file.write('小强:10本\n')
+    file.write('李明:15本\n')
+with open(r'C:\Users\Administrator\Desktop\test.txt','r',encoding='utf-8')as filel:
+    for data in filel:
+        if '小强:10本' in data:
+            print('数据在文件中')
+new_data=''
+with open(r'C:\Users\Administrator\Desktop\test.txt','r',encoding='utf-8')as filel:
+    for data in filel:
+        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 filel:
+    filel.write(new_data)
+
+