Fix circular import error in paddlespeech.cli.utils and paddlespeech.audio

paddlespeech/utils/env.py

+import os
+
+
+def _get_user_home():
+    return os.path.expanduser('~')
+
+
+def _get_paddlespcceh_home():
+    if 'PPSPEECH_HOME' in os.environ:
+        home_path = os.environ['PPSPEECH_HOME']
+        if os.path.exists(home_path):
+            if os.path.isdir(home_path):
+                return home_path
+            else:
+                raise RuntimeError(
+                    'The environment variable PPSPEECH_HOME {} is not a directory.'.
+                    format(home_path))
+        else:
+            return home_path
+    return os.path.join(_get_user_home(), '.paddlespeech')
+
+
+def _get_sub_home(directory):
+    home = os.path.join(_get_paddlespcceh_home(), directory)
+    if not os.path.exists(home):
+        os.makedirs(home)
+    return home
+
+
+PPSPEECH_HOME = _get_paddlespcceh_home()
+MODEL_HOME = _get_sub_home('models')
+CONF_HOME = _get_sub_home('conf')
+DATA_HOME = _get_sub_home('datasets')