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'
+data = ''
+with open(r'C:\Users\MAKCOO-03\Desktop\test.txt','r',encoding='utf-8') as file1:
+    for i in file1:
+        if '小兰' in i:
+            i = '小兰:13\n'
+        data += i
+
+with open(r'C:\Users\MAKCOO-03\Desktop\test.txt','w',encoding='utf-8') as file2:
+    file2.write(data)
+
+
+    #file.write('小王: 19\n')
+#file.write('小兰：12\n小丽：11\n李文：9\n张伟：16')
+#file.close()
\ No newline at end of file