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'f
+#file=open('C:\\Users\\松鼠\\Desktop\\book.txt','w',encoding='utf-8')
+#file.write("小兰：12本\n")
+#file.close()
+# file=open('C:\\Users\\松鼠\\Desktop\\book.txt','a',encoding='utf-8')
+# file.write("小丽:11本\n")
+# file.write("李文:9本\n")
+# file.write("小强:12本\n")
+# file.close()
+str=''
+with open('C:\\Users\\松鼠\\Desktop\\book.txt','r',encoding='utf-8')as file:
+    for i in file:
+        if "小强:12本" in i:
+            i=i.replace("小强:11本","小强:12本")
+        
+        str+=i
+with open('C:\\Users\\松鼠\\Desktop\\book.txt','w',encoding='utf-8')as file:
+    file.write(str)
+with open('C:\\Users\\松鼠\\Desktop\\book.txt','r',encoding='utf-8')as file:  
+    a =  file.read()
+    print(a)
+
+
+
+
+
+# print()
+# 、asd
+# asd
\ No newline at end of file