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'
+with open(r'C:\Users\zhang\Desktop\test.txt','w',encoding="utf-8") as q:
+
+    # a=open(f,'a',encoding="utf-8")
+    q.write('小兰：12本\n小丽：11本\n李文：9本\n张伟：16本\n')
+
+ne=''
+with open(r'C:\Users\zhang\Desktop\test.txt','r',encoding="utf-8") as f:
+    for e in f:
+        if "小兰：12本" in e:
+            e.replace("小兰：12本","小兰：14本")
+        ne+=e
+    print(ne)
+# ne.replace("小兰：12本","小兰：14本")
+# with open(r'C:\Users\zhang\Desktop\test.txt','w',encoding="utf-8") as a:
+
+#     # a=open(f,'a',encoding="utf-8")
+#     a.write(ne)
\ No newline at end of file