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\ASUS\Desktop\rg.txt","a",encoding="utf-8")as e:
+#     e.write('小兰：12本\n')
+#     e.write('小丽：11本\n')
+#     e.write('李文：9本\n')
+#     e.write('张伟：16本\n')
+c=''
+with open(r"C:\Users\ASUS\Desktop\rg.txt","r",encoding="utf-8")as e:
+    for fd in e:
+        if '小兰：12本' in fd:
+            fd=fd.replace('小兰：12本','小兰：10本')
+        c+=fd
+with open(r"C:\Users\ASUS\Desktop\rg.txt","w",encoding="utf-8")as e:
+    e.write(c)
+with open(r"C:\Users\ASUS\Desktop\rg.txt","r",encoding="utf-8")as e:
+    d=e.read()
+    print(d)