save project

diy.py

+sb = open(r"C:\Users\61936\Desktop\你干嘛~~哈哈~~哎哟~~.txt",'r',encoding='utf-8'):
+sb.write('小强：10本\n')
+sb.write('李明：15本\n')
+sb.write('小兰：12本\n')
+sb.close()
+sb.replace('小明：10本','小明：11本')
\ No newline at end of file

xfgnfs.py

+new_jj = ''
+with open(r"C:\Users\61936\Desktop\你干嘛~~哈哈~~哎哟~~.txt",'r',encoding='utf-8') as gg:
+    for jj in gg:
+        if '小强：10本' in jj:
+            jj = jj.replace('小强：10本','小强：11本')
+        new_jj += jj
+
+with open(r"C:\Users\61936\Desktop\你干嘛~~哈哈~~哎哟~~.txt",'w',encoding='utf-8') as gg:
+    gg.write(new_jj)