auto save

jj.py

+new_data=''
+with open(r'C:\Users\yinla\Desktop\test.txt','r',encoding='utf-8')as file1:
+    for data in file1:
+        if '小强：11本' in data:
+            data=data.replace('小强：11本','小强：90本')
+        new_data+=data
+with open(r'C:\Users\yinla\Desktop\test.txt','w',encoding='utf-8')as file1:
+    file1.write(new_data)
+with open(r'C:\Users\yinla\Desktop\test.txt','r',encoding='utf-8')as file1:
+    a=file1.read()
+    print(a)
+
+    
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