save project

diy.py

+new_file1=""
+# 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'
+# file1=open(r"C:\yejunyi\test.txt",'w',encoding='utf-8')
+
+# file1.write('小兰：12本\n')
+# file1.write('小丽：11本\n')
+# file1.write('李文：9本\n')
+# file1.close()
+
+
+# with open(r"C:\yejunyi\test.txt",'a',encoding='utf-8')as file1:
+#     file1.write("李明：15本\n")
+#     file1.write("小强：10本")
+
+with open(r"C:\yejunyi\test.txt",'r',encoding='utf-8')as file1:
+    for i in file1:
+        if "小强：10本"in i:
+        #     print("在")
+            i = i.replace("小强：10本","小强：11本") 
+        new_file1+=i
+with open(r"C:\yejunyi\test.txt",'w',encoding='utf-8')as file1: 
+    file1.write(new_file1)       
+    print(new_file1)
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