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'
+new_data = ''
+with open(r'C:\Users\Administrator\Desktop\book.txt','r',encoding='utf-8') as flie:
+    for data in flie:
+        if '小强：10本' in data:
+            data = data.replace('小强：10本','小强：11本')
+        new_data += data
+with open(r'C:\Users\Administrator\Desktop\book.txt','w',encoding='utf-8') as flie:
+    flie.write(new_data)
+with open(r'C:\Users\Administrator\Desktop\book.txt','r',encoding='utf-8') as flie:
+    a = flie.read()
+    print(a)
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