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'
+# with open(r'C:\Users\123\Desktop\test.txt','w',encoding='utf-8') as file:
+#     file.write('小兰：12本\n')
+#     file.write('小丽：11本\n')
+#     file.write('李四：9本\n')
+#     file.write('张三：16本\n')
+#     file.write('小强：10本\n')
+
+# with open(r'C:\Users\123\Desktop\test.txt','r',encoding='utf-8') as file:
+#     for i in file:
+#         if '小兰：12本' in i:
+#             print('在')
+#         if '小强：12本' in i:
+#             print('在')
+
+with open(r'C:\Users\123\Desktop\test.txt','r',encoding='utf-8') as file:
+    for i in file:
+        if '小强：12本' in i:
+            i=i.replace('小强：10本','小强：11本')
+        if '小兰：12本'in i:
+            i=i.replace('小兰：12本','小兰：14本')
+        new_i+=i
+
+with open(r'C:\Users\123\Desktop\test.txt','w',encoding='utf-8') as file:
+    file.write(new_i)
\ No newline at end of file