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'
+#a=open(r'C:\gaoyuze\abc.txt','w',encoding='utf-8')
+#a.write('小兰:12本')
+#a.write('小丽:11本')
+#a.write('李文:9本')
+#a.write('张伟:16本')
+i2=" "
+with open(r'C:\gaoyuze\abc.txt','r',encoding='utf-8') as a:
+    #a.write("哈:15本\n")
+    #a.write("233")
+    for i in a:
+        if "张伟:16本" in i:
+            i=i.replace("张伟:16本","张伟:999本")
+            i2+=i
+with open(r'C:\gaoyuze\abc.txt','w',encoding='utf-8') as a:
+    a.write(i2)
+with open(r'C:\gaoyuze\abc.txt','r',encoding='utf-8') as a:
+    b=a.read()
+    print(b)
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