auto save

1.py

+with open(r"C:\Users\19760\Desktop\1.txt",'r',\
+encoding='utf-8') as f:
+    for data in f:
+        if "王五：19本" in data:
+            data=data.replace("王五：19本","王五：15本")
+with open(r"C:\Users\19760\Desktop\1.txt",'w',\
+encoding='utf-8') as f:
+            
\ No newline at end of file

2.py

+a='abcd'
+print(id(a),a)
+a=a.replace("b","a")
+print(id(a),a)
\ No newline at end of file

3.py

+import turtle as t
+def draw(n):
+    if n>36:
+        t.forward(n)
+        t.left(30)
+        draw(n-6)
+        t.right(60)
+        draw(n-6)
+        t.left(30)
+        t.forward(-n)
+        
+
+
+
+
+
+
+
+t.left(90)
+draw(60)
+t.done()
\ No newline at end of file