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'
+# filei = open(r'C:\Users\Admin\Desktop\text.txt','a',encoding='utf-8')
+# filei.write("小兰：12本\n")
+# filei.write("小丽：11本\n")
+# filei.write("李文：9本\n")
+# filei.write("张伟：16本\n")
+# filei.close()
+
+# with open(r'C:\Users\Admin\Desktop\text.txt','a',encoding='utf-8')
+# filei.write("小强：10本\n")
+# filei.write("李明：25本\n")
+new_data=''
+with open(r'C:\Users\CM\Desktop\book.txt','r',encoding='utf-8') as file1:
+    for data in file1:
+        if '小强：10本'in data:
+            data=data.replace('小强：10本','小强：11本')
+
+        if '小兰：12本'in data: 
+            data=data.replace('小兰：12本','小兰：14本')
+        new_data+=data
+with open(r'C:\Users\CM\Desktop\book.txt','w',encoding='utf-8') as file1:
+    file1.write(new_data)
+
+with open(r'C:\Users\CM\Desktop\book.txt','r',encoding='utf-8') as file1:
+    a=file1.read()
+    print(a)
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