性能优化

Utils/SubprocessKit.py

@@ -0,0 +1,24 @@
+import os
+import subprocess
+
+__all__ = ['check_output', 'popen', 'PIPE']
+
+# 模块级单例，导入时只创建一次
+if os.name == "nt":
+    _si = subprocess.STARTUPINFO()
+    _si.dwFlags |= subprocess.STARTF_USESHOWWINDOW
+    _si.wShowWindow = subprocess.SW_HIDE
+else:
+    _si = None
+
+PIPE = subprocess.PIPE
+
+def check_output(cmd, **kw):
+    if os.name == "nt":
+        kw.setdefault('startupinfo', _si)
+    return subprocess.check_output(cmd, **kw)
+
+def popen(*args, **kw):
+    if os.name == "nt":
+        kw.setdefault('startupinfo', _si)
+    return subprocess.Popen(*args, **kw)