environment/lib/python2.7/site-packages/IPython/core/interactiveshell.py
def init_user_ns(self):
        """Initialize all user-visible namespaces to their minimum defaults.

        Certain history lists are also initialized here, as they effectively
        act as user namespaces.

        Notes
        -----
        All data structures here are only filled in, they are NOT reset by this
        method.  If they were not empty before, data will simply be added to
        therm.
        """
        # This function works in two parts: first we put a few things in
        # user_ns, and we sync that contents into user_ns_hidden so that these
        # initial variables aren't shown by %who.  After the sync, we add the
        # rest of what we *do* want the user to see with %who even on a new
        # session (probably nothing, so theye really only see their own stuff)

        # The user dict must *always* have a __builtin__ reference to the
        # Python standard __builtin__ namespace,  which must be imported.
        # This is so that certain operations in prompt evaluation can be
        # reliably executed with builtins.  Note that we can NOT use
        # __builtins__ (note the 's'),  because that can either be a dict or a
        # module, and can even mutate at runtime, depending on the context
        # (Python makes no guarantees on it).  In contrast, __builtin__ is
        # always a module object, though it must be explicitly imported.

        # For more details:
        # http://mail.python.org/pipermail/python-dev/2001-April/014068.html
        ns = dict()
        
        # Put 'help' in the user namespace
        try:
            from site import _Helper
            ns['help'] = _Helper()
        except ImportError:
            warn('help() not available - check site.py')

        # make global variables for user access to the histories
        ns['_ih'] = self.history_manager.input_hist_parsed
        ns['_oh'] = self.history_manager.output_hist
        ns['_dh'] = self.history_manager.dir_hist

        ns['_sh'] = shadowns

        # user aliases to input and output histories.  These shouldn't show up
        # in %who, as they can have very large reprs.
        ns['In']  = self.history_manager.input_hist_parsed
        ns['Out'] = self.history_manager.output_hist

        # Store myself as the public api!!!
        ns['get_ipython'] = self.get_ipython
        
        ns['exit'] = self.exiter
        ns['quit'] = self.exiter

        # Sync what we've added so far to user_ns_hidden so these aren't seen
        # by %who
        self.user_ns_hidden.update(ns)

        # Anything put into ns now would show up in %who.  Think twice before
        # putting anything here, as we really want %who to show the user their
        # stuff, not our variables.

        # Finally, update the real user's namespace
        self.user_ns.update(ns)
def init_user_ns(self):
        # This function works in two parts: first we put a few things in
        # user_ns, and we sync that contents into user_ns_hidden so that these
        # initial variables aren't shown by %who.  After the sync, we add the
        # rest of what we *do* want the user to see with %who even on a new
        # session (probably nothing, so theye really only see their own stuff)

        # The user dict must *always* have a __builtin__ reference to the
        # Python standard __builtin__ namespace,  which must be imported.
        # This is so that certain operations in prompt evaluation can be
        # reliably executed with builtins.  Note that we can NOT use
        # __builtins__ (note the 's'),  because that can either be a dict or a
        # module, and can even mutate at runtime, depending on the context
        # (Python makes no guarantees on it).  In contrast, __builtin__ is
        # always a module object, though it must be explicitly imported.

        # For more details:
        # http://mail.python.org/pipermail/python-dev/2001-April/014068.html
        ns = dict()
        
        # Put 'help' in the user namespace
        try:
            from site import _Helper
            ns['help'] = _Helper()
        except ImportError:
            warn('help() not available - check site.py')

        # make global variables for user access to the histories
        ns['_ih'] = self.history_manager.input_hist_parsed
        ns['_oh'] = self.history_manager.output_hist
        ns['_dh'] = self.history_manager.dir_hist

        ns['_sh'] = shadowns

        # user aliases to input and output histories.  These shouldn't show up
        # in %who, as they can have very large reprs.
        ns['In']  = self.history_manager.input_hist_parsed
        ns['Out'] = self.history_manager.output_hist

        # Store myself as the public api!!!
        ns['get_ipython'] = self.get_ipython
        
        ns['exit'] = self.exiter
        ns['quit'] = self.exiter

        # Sync what we've added so far to user_ns_hidden so these aren't seen
        # by %who
        self.user_ns_hidden.update(ns)

        # Anything put into ns now would show up in %who.  Think twice before
        # putting anything here, as we really want %who to show the user their
        # stuff, not our variables.

        # Finally, update the real user's namespace
        self.user_ns.update(ns)
def init_user_ns ( self ) : # This function works in two parts: first we put a few things in # user_ns, and we sync that contents into user_ns_hidden so that these # initial variables aren't shown by %who.  After the sync, we add the # rest of what we *do* want the user to see with %who even on a new # session (probably nothing, so theye really only see their own stuff) # The user dict must *always* have a __builtin__ reference to the # Python standard __builtin__ namespace,  which must be imported. # This is so that certain operations in prompt evaluation can be # reliably executed with builtins.  Note that we can NOT use # __builtins__ (note the 's'),  because that can either be a dict or a # module, and can even mutate at runtime, depending on the context # (Python makes no guarantees on it).  In contrast, __builtin__ is # always a module object, though it must be explicitly imported. # For more details: # http://mail.python.org/pipermail/python-dev/2001-April/014068.html ns = dict ( ) # Put 'help' in the user namespace try : from site import _Helper ns [ 'help' ] = _Helper ( ) except ImportError : warn ( 'help() not available - check site.py' ) # make global variables for user access to the histories ns [ '_ih' ] = self . history_manager . input_hist_parsed ns [ '_oh' ] = self . history_manager . output_hist ns [ '_dh' ] = self . history_manager . dir_hist ns [ '_sh' ] = shadowns # user aliases to input and output histories.  These shouldn't show up # in %who, as they can have very large reprs. ns [ 'In' ] = self . history_manager . input_hist_parsed ns [ 'Out' ] = self . history_manager . output_hist # Store myself as the public api!!! ns [ 'get_ipython' ] = self . get_ipython ns [ 'exit' ] = self . exiter ns [ 'quit' ] = self . exiter # Sync what we've added so far to user_ns_hidden so these aren't seen # by %who self . user_ns_hidden . update ( ns ) # Anything put into ns now would show up in %who.  Think twice before # putting anything here, as we really want %who to show the user their # stuff, not our variables. # Finally, update the real user's namespace self . user_ns . update ( ns )
Initialize all user-visible namespaces to their minimum defaults.

        Certain history lists are also initialized here, as they effectively
        act as user namespaces.

        Notes
        -----
        All data structures here are only filled in, they are NOT reset by this
        method.  If they were not empty before, data will simply be added to
        therm.
Initialize all user - visible namespaces to their minimum defaults .