Moved py.code code over to py.test

Fix #103

doc/en/assert.rst

@@ -81,13 +81,10 @@ and if you need to have access to the actual exception info you may use::
             f()
         assert 'maximum recursion' in str(excinfo.value)
 
-``excinfo`` is a `py.code.ExceptionInfo`_ instance, which is a wrapper around
+``excinfo`` is a ``ExceptionInfo`` instance, which is a wrapper around
 the actual exception raised.  The main attributes of interest are
 ``.type``, ``.value`` and ``.traceback``.
 
-.. _py.code.ExceptionInfo:
-    http://pylib.readthedocs.org/en/latest/code.html#py-code-exceptioninfo
-
 If you want to write test code that works on Python 2.4 as well,
 you may also use two other ways to test for an expected exception::
 

doc/en/example/assertion/failure_demo.py

@@ -1,4 +1,5 @@
 from pytest import raises
+import _pytest._code
 import py
 
 def otherfunc(a,b):
@@ -159,7 +160,7 @@ def test_dynamic_compile_shows_nicely():
     src = 'def foo():\n assert 1 == 0\n'
     name = 'abc-123'
     module = py.std.imp.new_module(name)
-    code = py.code.compile(src, name, 'exec')
+    code = _pytest._code.compile(src, name, 'exec')
     py.builtin.exec_(code, module.__dict__)
     py.std.sys.modules[name] = module
     module.foo()

doc/en/example/multipython.py

@@ -4,6 +4,7 @@ serialization via the pickle module.
 """
 import py
 import pytest
+import _pytest._code
 
 pythonlist = ['python2.6', 'python2.7', 'python3.3']
 @pytest.fixture(params=pythonlist)
@@ -23,7 +24,7 @@ class Python:
         self.picklefile = picklefile
     def dumps(self, obj):
         dumpfile = self.picklefile.dirpath("dump.py")
-        dumpfile.write(py.code.Source("""
+        dumpfile.write(_pytest._code.Source("""
             import pickle
             f = open(%r, 'wb')
             s = pickle.dump(%r, f, protocol=2)
@@ -33,7 +34,7 @@ class Python:
 
     def load_and_is_true(self, expression):
         loadfile = self.picklefile.dirpath("load.py")
-        loadfile.write(py.code.Source("""
+        loadfile.write(_pytest._code.Source("""
             import pickle
             f = open(%r, 'rb')
             obj = pickle.load(f)