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\text.txt','w',encoding='utf-8')
+file1.write("小兰:12本\n小丽:11本\n李文:9本\n张伟:16本\n")
+file1.close()
+file1=open(r'C:\Users\Administrator\Desktop\text.txt','a',encoding='utf-8')
+file1.write("小强:12本\n李明:15本\n")
+file1.close()
+with open(r'C:\Users\Administrator\Desktop\text.txt','a',encoding='utf-8') as file1:
+    file1.write("小强:12本\n李明:15本")
+#with open(r'C:\Users\Administrator\Desktop\text.txt','r',encoding='utf-8') as file1:
+    # for i in file1:
+    #     if '小强:12本' in file1:
+    #         if'小兰:12本' in file1:
+    #             print("有小兰和小强")
+    #         else:
+    #             print("没有小兰")
+    #     else:
+    #         print("没有小强")
+file2=""
+for i in file1:
+    if '小强:12本' in i:
+        i=i.replace('小强:12本','小强:13本')
+        file2+=i
+print(file2)
+with open(r'C:\Users\Administrator\Desktop\text.txt','a',encoding='utf-8') as file1:
+    file1.write(file2)
+with open(r'C:\Users\Administrator\Desktop\text.txt','a',encoding='utf-8') as file1:
+    for i in file1:
+        print(i)
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