Do not expose imports.

goless/__init__.py

@@ -10,9 +10,9 @@
 See http://goless.readthedocs.org/ for more documentation.
 """
 
-import logging
-import sys
-import traceback
+import logging as _logging
+import sys as _sys
+import traceback as _traceback
 
 from .backends import current as _be, Deadlock, GolessException
 
@@ -37,7 +37,7 @@ def on_panic(etype, value, tb):
     Called when there is an unhandled error in a goroutine.
     By default, logs and exits the process.
     """
-    logging.critical(traceback.format_exception(etype, value, tb))
+    _logging.critical(_traceback.format_exception(etype, value, tb))
     _be.propagate_exc(SystemExit, 1)
 
 
@@ -57,6 +57,6 @@ def safe_wrapped(f):
         try:
             f(*args, **kwargs)
         except:
-            on_panic(*sys.exc_info())
+            on_panic(*_sys.exc_info())
 
     _be.start(safe_wrapped, func)

goless/backends.py

@@ -1,7 +1,7 @@
-import contextlib
-import os
-import platform
-import sys
+import contextlib as _contextlib
+import os as _os
+import platform as _platform
+import sys as _sys
 
 
 class GolessException(Exception):
@@ -13,7 +13,7 @@ def __init__(self, msg):
         Exception.__init__(self, msg)
 
 
-@contextlib.contextmanager
+@_contextlib.contextmanager
 def _as_deadlock(*errtypes):
     try:
         yield
@@ -97,7 +97,7 @@ def _make_gevent():
     import gevent
     import gevent.hub
     import gevent.queue
-    deadlock_errtype = SystemError if os.name == 'nt' else gevent.hub.LoopExit
+    deadlock_errtype = SystemError if _os.name == 'nt' else gevent.hub.LoopExit
 
     class Channel(gevent.queue.Channel):
         def send(self, value):
@@ -142,7 +142,7 @@ def propagate_exc(self, errtype, *args):
 and stackless (for Stackless Python or PyPy).
 You are currently running %s.
 See goless.backends.calculate_backend for more details about what backend
-is chosen under what conditions.""" % sys.executable
+is chosen under what conditions.""" % _sys.executable
 
 
 class NoValidBackend(Exception):
@@ -168,7 +168,7 @@ def __call__(self, *args, **kwargs):
     'gevent': _make_gevent
 }
 
-is_pypy = platform.python_implementation() == 'PyPy'
+is_pypy = _platform.python_implementation() == 'PyPy'
 
 
 def _calc_default(backends):
@@ -226,4 +226,4 @@ def calculate_backend(name_from_env, backends=None):
     return NullBackend()
 
 
-current = calculate_backend(os.getenv('GOLESS_BACKEND', ''))
+current = calculate_backend(_os.getenv('GOLESS_BACKEND', ''))

goless/channels.py

@@ -1,7 +1,7 @@
 import collections as _collections
 
 from .backends import current as _be, GolessException as _GolessException
-from .compat import range, maxint, PY3
+from .compat import range as _range, maxint as _maxint, PY3 as _PY3
 
 
 class ChannelClosed(_GolessException):
@@ -89,7 +89,7 @@ def _next(self):
         except ChannelClosed:
             raise StopIteration
 
-    if PY3:
+    if _PY3:
         def __next__(self):
             return self._next()
     else:
@@ -181,9 +181,9 @@ def close(self):
         # and raise a ChannelClosed error.
         GoChannel.close(self)
         balance = self.waiting_chan.balance
-        for _ in range(balance, 0):
+        for _ in _range(balance, 0):
             self.waiting_chan.send(None)
-        for _ in range(balance):
+        for _ in _range(balance):
             self.waiting_chan.receive()
 
 
@@ -209,7 +209,7 @@ class AsyncChannel(BufferedChannel):
     """
 
     def __init__(self):
-        BufferedChannel.__init__(self, maxint)
+        BufferedChannel.__init__(self, _maxint)
 
 
 def chan(size=0):