save project

diy.py

+# 写入同学们的捐赠明细：'小兰：12本'、、'李文：9本'、'张伟：16本'
+new_data=""
+with open(r"C:\Users\HP\Desktop\test.txt","r",encoding="utf-8") as file1: 
+    for data in data:
+        if "小强：12" in data:
+            data=data.replace("小强：12","小强：13")
+        new_data+=data
+with open(r"C:\Users\HP\Desktop\test.txt","w",encoding="utf-8") as file1: 
+    file1.write(new_data)
+
+
+
+
+
+
+
+
+
+with open(r"C:\Users\HP\Desktop\test.txt","r",encoding="utf-8") as file1: 
+    file1.write('小兰：12本')
+    file1.write('小丽：11本')
+    file1.write('李文：9本')
+    file1.write('张伟：16本')
+    file1.write("小强：12"\n)
+    file1.write("liming：15"\n)
+    for data in file1:
+        if "小强：12本" in data:
+            print("在")
+        if "小兰：12本" in data:
+            print("在")