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\72727\Desktop\test.txt",'w',encoding='utf-8') as a:
+    a.write('小兰：12本\n')
+    a.write('小丽：11本\n')
+    a.write('李文：9本\n')
+    a.write('张伟:16本')
+b=open(r"C:\Users\72727\Desktop\test.txt",'r',encoding='utf-8')
+with open(r"C:\Users\72727\Desktop\test.txt",'r',encoding='utf-8') as b:
+        c=b.read()
+print(c)
+print('-'*10)
+new_c=c.replace('小兰：12本','小兰：14本')
+print(c)
+d=open(r"C:\Users\72727\Desktop\test.txt",'w',encoding='utf-8')
+with open(r"C:\Users\72727\Desktop\test.txt",'w',encoding='utf-8') as d:
+    d.write(new_c)
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