save project

diy.py

+# 写入同学们的捐赠明细：'小兰：12本'、'小丽：11本'、'李文：9本'、'张伟：16本'
+file1=open(r'C:\Users\Administrator\Desktop\test.txt','w',encoding='utf-8')
+file1.write('小兰：12本\n小丽：11本\n李文：9本\n')
+file1.close()
+with open(r'C:\Users\Administrator\Desktop\test.txt','a',encoding='utf-8') as file1:  
+    file1.write('小强：10本')
+# file1=open(r'C:\Users\Administrator\Desktop\test.txt','r',encoding='utf-8')
+# a=file1.read()
+# print(a)
+new_i=''
+with open(r'C:\Users\Administrator\Desktop\test.txt','r',encoding='utf-8') as file1:
+    for i in file1:
+        if "小强：10本" in i:
+            i=i.replace('小强：10本','小强：12本')
+        new_i+=i
+with open(r'C:\Users\Administrator\Desktop\test.txt','w',encoding='utf-8') as file1:
+    file1.write(new_i)
\ No newline at end of file