save project

diy.py

+# 写入同学们的捐赠明细：
+#a=open(r'C:\Users\Administrator\Desktop\test.txt',"w",encoding='utf-8')
+#a.write('小兰：12本\n小丽：11本\n李文：9本\n张伟：16本\n')
+#a.close()
+#a=open(r'C:\Users\Administrator\Desktop\test.txt',"a",encoding='utf-8')
+#a.write('小小：10本\n')
+#a.close()
+r=""
+with open(r'C:\Users\Administrator\Desktop\test.txt','r',encoding='utf-8') as a:
+
+    for data in a:
+        if '小小：10本' in data :
+            data=data.replace('小小：10本','小小：11本')
+        r+=data
+with open(r'C:\Users\Administrator\Desktop\test.txt','w',encoding='utf-8') as a:
+    a.write(r)
+
+            
+
+
+
+
+
+
+
+
+