diff -r b11b71aaf864 Modules/posixmodule.c
--- a/Modules/posixmodule.c	Sat May 21 14:56:53 2016 +0300
+++ b/Modules/posixmodule.c	Mon May 23 10:56:13 2016 +0200
@@ -13247,6 +13247,14 @@
 }
 PyModule_AddObject(m, "_have_functions", list);
 
+#ifdef __ANDROID__
+ v = Py_True;
+#else
+ v = Py_False;
+#endif
+ Py_INCREF(v);
+ PyModule_AddObject(m, "is_android", v);
+
 initialized = 1;
 
 return m;
diff -r b11b71aaf864 Lib/os.py
--- a/Lib/os.py	Sat May 21 14:56:53 2016 +0300
+++ b/Lib/os.py	Mon May 23 12:10:08 2016 +0200
@@ -203,6 +203,13 @@
 del _add
 
 
+if sys.platform == 'win32':
+ default_shell = 'cmd.exe'
+elif _exists('is_android') and is_android:
+ default_shell = '/system/bin/sh'
+else:
+ default_shell = '/bin/sh'
+
 # Python uses fixed values for the SEEK_ constants; they are mapped
 # to native constants if necessary in posixmodule.c
 # Other possible SEEK values are directly imported from posixmodule.c
</div><div class="naked_ctrl">
<form action="/index.cgi/contrast" method="get" name="gate">
<p><a href="http://altstyle.alfasado.net">AltStyle</a> によって変換されたページ <a href="https://bugs.python.org/file42953/default_shell.patch">(-&gt;オリジナル)</a>
/ <label>アドレス: <input type="text" name="naked_post_url" value="https://bugs.python.org/file42953/default_shell.patch" size="22" /></label> <label>モード: <select name="naked_post_mode">
<option value="default">デフォルト</option>
<option value="speech">音声ブラウザ</option>
<option value="ruby">ルビ付き</option>
<option value="contrast" selected="selected">配色反転</option>
<option value="larger-text">文字拡大</option>
<option value="mobile">モバイル</option>
</select>
<input type="submit" value="表示" />
</p>
</form>
</div>