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'
+# 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' f=open(r"C:\Users\Administrator\Desktop\test.txt","w",encoding="utf-8")
\ No newline at end of file
+# f.write("小兰,12本\n")
+# f.write("小丽,11本\n")
+# f.write("李文,9本\n")
+# f.write("张伟,16本\n")
+# f.close()
+
+# f=open(r"C:\Users\Administrator\Desktop\test.txt","w",encoding="utf-8")
+# f.write("小强,1本\n")
+# f.close()
+
+# with open(r"C:\Users\Administrator\Desktop\test.txt","a",encoding="utf-8") as f:
+#     f.write("小强,10本\n")
+
+# with open(r"C:\Users\Administrator\Desktop\test.txt","r",encoding="utf-8") as f:
+#     a=f.read()
+# print(a)
+
+# with open(r"C:\Users\Administrator\Desktop\test.txt","r",encoding="utf-8") as f:
+#     for data in f:
+#         if "小强,10本\n" in data:
+#             print("数据在文件中")
+new_data=""
+with open(r"C:\Users\Administrator\Desktop\test.txt","r",encoding="utf-8") as f:
+    for data in filen:
+        if "小强,10本\n" in data:
+            data=data.replace("小强,10本\n","小强,11本\n")
+        new_data+=data
+
+with open(r"C:\Users\Administrator\Desktop\test.txt","w",encoding="utf-8") as f:
+    f.write(new_data)