diff --git a/homework_01_python/002.py b/homework_01_python/002.py
new file mode 100644
index 0000000000000000000000000000000000000000..a003b51cd5907584b1aee4b96177b1455da54366
--- /dev/null
+++ b/homework_01_python/002.py
@@ -0,0 +1,9 @@
+i=0
+print("有以下三位数：")
+for a in range(1,5,1):
+    for b in range(1,5,1):
+        for c in range(1,5,1):
+            if a!=b and b!=c and a!=c:
+                i=i+1
+                print(a*100+b*10+c)
+print("共",i,"个")
\ No newline at end of file