save project

diy.py

+new_sb = ''
+with open(r'C:\Users\EDY\Desktop\book.txt', 'r',encoding = 'utf-8') as f:
+    for sb in f:
+        if '小强' in sb:
+            print("sb")
+            sb = sb.replace('小强：12本','小强：11本')
+        if '小兰：12本' in sb:
+            print("250")
+            sb = sb.replace('2','4')
+        new_sb += sb
+        print(new_sb)
+with open(r'C:\Users\EDY\Desktop\book.txt', 'w',encoding = 'utf-8') as f:
+    f.write(new_sb)        
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