auto save

t.py

+with open(r'C:\Users\cc\Desktop\909090.txt','w',encoding='utf-8') as file:
+    file.write("嘻嘻嘻嘻哦")
+
+with open(r'C:\Users\cc\Desktop\909090.txt','r',encoding='utf-8') as file:
+    h=file.read()
+#data=''
+with open(r'C:\Users\cc\Desktop\909090.txt','r',encoding='utf-8') as file:
+    for ad in file:
+        if "哦" in ad:
+            new=ad.replace("哦","y")
+        #data+=
+    print(new)