refactor/move some utilities into _common.py

psutil/__init__.py

@@ -2473,7 +2473,7 @@ def test():  # pragma: no cover
         else:
             cputime = ''
 
-        user = p.info['username']
+        user = p.info['username'] or ''
         if not user and POSIX:
             try:
                 user = p.uids()[0]

psutil/_common.py

@@ -619,3 +619,16 @@ def bytes2human(n, format="%(value).1f%(symbol)s"):
             value = float(n) / prefix[symbol]
             return format % locals()
     return format % dict(symbol=symbols[0], value=n)
+
+
+def get_procfs_path():
+    """Return updated psutil.PROCFS_PATH constant."""
+    return sys.modules['psutil'].PROCFS_PATH
+
+
+if PY3:
+    def decode(s):
+        return s.decode(encoding=ENCODING, errors=ENCODING_ERRS)
+else:
+    def decode(s):
+        return s

psutil/_psaix.py

@@ -20,6 +20,7 @@
 from . import _psutil_aix as cext
 from . import _psutil_posix as cext_posix
 from ._common import AF_INET6
+from ._common import get_procfs_path
 from ._common import memoize_when_activated
 from ._common import NIC_DUPLEX_FULL
 from ._common import NIC_DUPLEX_HALF
@@ -101,16 +102,6 @@
 svmem = namedtuple('svmem', ['total', 'available', 'percent', 'used', 'free'])
 
 
-# =====================================================================
-# --- utils
-# =====================================================================
-
-
-def get_procfs_path():
-    """Return updated psutil.PROCFS_PATH constant."""
-    return sys.modules['psutil'].PROCFS_PATH
-
-
 # =====================================================================
 # --- memory
 # =====================================================================

psutil/_pslinux.py

@@ -25,8 +25,8 @@
 from . import _psposix
 from . import _psutil_linux as cext
 from . import _psutil_posix as cext_posix
-from ._common import ENCODING
-from ._common import ENCODING_ERRS
+from ._common import decode
+from ._common import get_procfs_path
 from ._common import isfile_strict
 from ._common import memoize
 from ._common import memoize_when_activated
@@ -207,19 +207,6 @@ class IOPriority(enum.IntEnum):
 # =====================================================================
 
 
-if PY3:
-    def decode(s):
-        return s.decode(encoding=ENCODING, errors=ENCODING_ERRS)
-else:
-    def decode(s):
-        return s
-
-
-def get_procfs_path():
-    """Return updated psutil.PROCFS_PATH constant."""
-    return sys.modules['psutil'].PROCFS_PATH
-
-
 def readlink(path):
     """Wrapper around os.readlink()."""
     assert isinstance(path, basestring), path

psutil/_pssunos.py

@@ -17,6 +17,7 @@
 from . import _psutil_posix as cext_posix
 from . import _psutil_sunos as cext
 from ._common import AF_INET6
+from ._common import get_procfs_path
 from ._common import isfile_strict
 from ._common import memoize_when_activated
 from ._common import sockfam_to_enum
@@ -113,16 +114,6 @@
     'pmmap_ext', 'addr perms ' + ' '.join(pmmap_grouped._fields))
 
 
-# =====================================================================
-# --- utils
-# =====================================================================
-
-
-def get_procfs_path():
-    """Return updated psutil.PROCFS_PATH constant."""
-    return sys.modules['psutil'].PROCFS_PATH
-
-
 # =====================================================================
 # --- memory
 # =====================================================================