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'
+# mmm=open(r"C:\Users\86186\Desktop\text.txt","w",encoding="utf-8")
+# mmm.write('小兰：12本\n小丽：11本\n李文：9本\n张伟：16本\n')
+# mmm.close()
+# with open(r"C:\Users\86186\Desktop\text.txt","a",encoding="utf-8") as flie:
+#     flie.write("小强: 12本\n李明: 15本\n")
+# with open(r"C:\Users\86186\Desktop\text.txt","r",encoding="utf-8") as flie:
+#     a=flie.read()
+#     print(a)
+new_i=""
+with open(r"C:\Users\86186\Desktop\text.txt","r",encoding="utf-8")as flie:
+    for i in flie:
+        print(i)
+        if "小强: 12本\n"==i:
+            i=i.replace("小强: 12本\n","小强: 10本\n")
+        new_i=new_i+i
+with open(r"C:\Users\86186\Desktop\text.txt","w",encoding="utf-8")as flie:
+    flie.write(new_i)
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