diff --git a/a.py b/a.py
deleted file mode 100644
index 004354be..00000000
--- a/a.py
+++ /dev/null
@@ -1,16 +0,0 @@
-import os, socket
-
-def CreateChild(*args):
-  '''
-  Create a child process whos stdin/stdout is connected to a socketpair.
-  Returns:
-    fd
-  '''
-  sock1, sock2 = socket.socketpair()
-  if os.fork():
-    for pair in ((0, sock1), (1, sock2)):
-      os.dup2(sock2.fileno(), pair[0])
-      os.close(pair[1].fileno())
-    os.execvp(args[0], args)
-    raise SystemExit
-  return sock1