save project

diy.py

+# 写入同学们的捐赠明细：'小兰：12本'、、'李文：9本'、''
+# with open(r"C:\Users\XMBC\Desktop\test.txt",'a',encoding='utf-8') as file1:
+    # file1.write('小兰：12本\n小丽：11本\n张伟：16本\n小强：12本\n李明：15本')
+new_data = ''
+with open(r"C:\Users\XMBC\Desktop\test.txt",'r',encoding='utf-8') as file1:
+    for data in file1:
+        if '小强：12本' in data:
+            data = data.replace('2','1')
+        if '小兰：12本' in data:
+            data = data.replace('2','4')
+        new_data += data
+with open(r"C:\Users\XMBC\Desktop\test.txt",'w',encoding='utf-8') as file1:
+    file1.write(new_data)
+with open(r"C:\Users\XMBC\Desktop\test.txt",'r',encoding='utf-8') as file1:
+    print(file1.read())
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