auto save

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'
+file=open(r'C:\Users\cc\Desktop\yiyi.txt','w',encoding='utf-8')
+file.write('小兰：12本、小丽：11本、李文：9本、张伟：16本')
+file.close()
+file=open(r'C:\Users\cc\Desktop\yiyi.txt','a',encoding='utf-8')
+file.write('环保局：1234567890本')
+file.close()
\ No newline at end of file

hbgy.py

+file=open(r'C:\Users\cc\Desktop\yiyi.txt','r',encoding='utf-8')
+s=file.read()
+print(s)
+
+file=open(r'C:\Users\cc\Desktop\yiyi.txt','r',encoding='utf-8')
+for i in file:
+    if "小王" in i:
+        print("在")
+    else:
+        print("不在")

tr.py/rt.py

+with open(') as file:
+    file.write('韩国:11111111本\n')    
\ No newline at end of file