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\admin\Desktop\test.txt','a',encoding='utf-8') as file:
+#     file.write("小兰：12本\n")
+#     file.write("小丽：11本\n")
+#     file.write("李文：12本\n")
+#     file.write("张伟：16本\n")
+#     file.write("小强：10本\n")
+#     file.write("李明：15本\n")
+# with open(r'C:\Users\admin\Desktop\test.txt','r',encoding='utf-8') as file:
+#     for data in file:
+#         if "小兰：12本" in data:
+#             print("小兰在数据中")
+#         if "小强：10本" in data:
+#             print("小强在数据中")
+new=''
+with open(r'C:\Users\admin\Desktop\test.txt','r',encoding='utf-8') as file:
+    for data in file:
+        if "小兰：12本" in data:
+            data=data.replace("小兰：12本","小兰：14本")
+        if "小强：10本" in data:
+            data=data.replace("小强：10本","小强：11本")
+        new+=data
+with open(r'C:\Users\admin\Desktop\test.txt','w',encoding='utf-8') as file:
+    file.write(new)
+with open(r'C:\Users\admin\Desktop\test.txt','r',encoding='utf-8') as file:
+    a=file.read()
+    print(a)
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