From 3842205376d101147f3605b0e8ea238f884b21f8 2015-06-19 16:22:06
From: Matthias Bussonnier <bussonniermatthias@gmail.com>
Date: 2015-06-19 16:22:06
Subject: [PATCH] Remove old deprecated extensions.

All theses extensions are already in their own repository.

Local Rmagic could in any cases not be imported as %load_ext would raise
if rpy2 not available.

Cython and sympy where still trying to do the right things, which I
removed, and converted to warnings. (cannot use DeprecationWarning as
they would be hidden) and no way to get the right stacklevel as this is
magic that load the ext.

---

diff --git a/IPython/extensions/cythonmagic.py b/IPython/extensions/cythonmagic.py
index 724654c..3c88e7c 100644
--- a/IPython/extensions/cythonmagic.py
+++ b/IPython/extensions/cythonmagic.py
@@ -1,5 +1,7 @@
 # -*- coding: utf-8 -*-
 """
+**DEPRECATED**
+
 The cython magic has been integrated into Cython itself, 
 which is now released in version 0.21.
 
@@ -8,36 +10,12 @@ file `Cython/Build/IpythonMagic.py`
 """
 #-----------------------------------------------------------------------------
 # Copyright (C) 2010-2011, IPython Development Team.
-#
-# Distributed under the terms of the Modified BSD License.
-#
-# The full license is in the file COPYING.txt, distributed with this software.
 #-----------------------------------------------------------------------------
 
-from __future__ import print_function
-
-import IPython.utils.version as version
-
-try:
-    import Cython
-except:
-    Cython = None
-
-try:
-    from Cython.Build.IpythonMagic import CythonMagics
-except :
-    pass
-
+import warnings
 
 ## still load the magic in IPython 3.x, remove completely in future versions.
 def load_ipython_extension(ip):
     """Load the extension in IPython."""
-    
-    print("""The Cython magic has been moved to the Cython package, hence """)
-    print("""`%load_ext cythonmagic` is deprecated; please use `%load_ext Cython` instead.""")
-    
-    if Cython is None or not version.check_version(Cython.__version__, "0.21"):
-        print("You need Cython version >=0.21 to use the Cython magic")
-        return 
-    print("""\nThough, because I am nice, I'll still try to load it for you this time.""")
-    Cython.load_ipython_extension(ip)
+
+    warnings.warn("""The Cython magic has been moved to the Cython package""")
diff --git a/IPython/extensions/rmagic.py b/IPython/extensions/rmagic.py
index a723d45..ec57639 100644
--- a/IPython/extensions/rmagic.py
+++ b/IPython/extensions/rmagic.py
@@ -1,702 +1,12 @@
 # -*- coding: utf-8 -*-
-"""
-======
-Rmagic
-======
-
-Magic command interface for interactive work with R via rpy2
-
-.. note::
-
-  The ``rpy2`` package needs to be installed separately. It
-  can be obtained using ``easy_install`` or ``pip``.
-
-  You will also need a working copy of R.
-
-Usage
-=====
-
-To enable the magics below, execute ``%load_ext rmagic``.
-
-``%R``
-
-{R_DOC}
-
-``%Rpush``
-
-{RPUSH_DOC}
-
-``%Rpull``
-
-{RPULL_DOC}
-
-``%Rget``
-
-{RGET_DOC}
-
-"""
-from __future__ import print_function
 
 #-----------------------------------------------------------------------------
 #  Copyright (C) 2012 The IPython Development Team
-#
-#  Distributed under the terms of the BSD License.  The full license is in
-#  the file COPYING, distributed as part of this software.
 #-----------------------------------------------------------------------------
 
-import sys
-import tempfile
-from glob import glob
-from shutil import rmtree
 import warnings
 
-# numpy and rpy2 imports
-
-import numpy as np
-
-import rpy2.rinterface as ri
-import rpy2.robjects as ro
-try:
-    from rpy2.robjects import pandas2ri
-    pandas2ri.activate()
-except ImportError:
-    pandas2ri = None
-    from rpy2.robjects import numpy2ri
-    numpy2ri.activate()
-
-# IPython imports
-
-from IPython.core.displaypub import publish_display_data
-from IPython.core.magic import (Magics, magics_class, line_magic,
-                                line_cell_magic, needs_local_scope)
-from IPython.core.magic_arguments import (
-    argument, magic_arguments, parse_argstring
-)
-from simplegeneric import generic
-from IPython.utils.py3compat import (str_to_unicode, unicode_to_str, PY3,
-                                     unicode_type)
-from IPython.utils.text import dedent
-
-class RInterpreterError(ri.RRuntimeError):
-    """An error when running R code in a %%R magic cell."""
-    def __init__(self, line, err, stdout):
-        self.line = line
-        self.err = err.rstrip()
-        self.stdout = stdout.rstrip()
-    
-    def __unicode__(self):
-        s = 'Failed to parse and evaluate line %r.\nR error message: %r' % \
-                (self.line, self.err)
-        if self.stdout and (self.stdout != self.err):
-            s += '\nR stdout:\n' + self.stdout
-        return s
-    
-    if PY3:
-        __str__ = __unicode__
-    else:
-        def __str__(self):
-            return unicode_to_str(unicode(self), 'utf-8')
-
-def Rconverter(Robj, dataframe=False):
-    """
-    Convert an object in R's namespace to one suitable
-    for ipython's namespace.
-
-    For a data.frame, it tries to return a structured array.
-    It first checks for colnames, then names.
-    If all are NULL, it returns np.asarray(Robj), else
-    it tries to construct a recarray
-
-    Parameters
-    ----------
-
-    Robj: an R object returned from rpy2
-    """
-    is_data_frame = ro.r('is.data.frame')
-    colnames = ro.r('colnames')
-    rownames = ro.r('rownames') # with pandas, these could be used for the index
-    names = ro.r('names')
-
-    if dataframe:
-        as_data_frame = ro.r('as.data.frame')
-        cols = colnames(Robj)
-        _names = names(Robj)
-        if cols != ri.NULL:
-            Robj = as_data_frame(Robj)
-            names = tuple(np.array(cols))
-        elif _names != ri.NULL:
-            names = tuple(np.array(_names))
-        else: # failed to find names
-            return np.asarray(Robj)
-        Robj = np.rec.fromarrays(Robj, names = names)
-    return np.asarray(Robj)
-
-@generic
-def pyconverter(pyobj):
-    """Convert Python objects to R objects. Add types using the decorator:
-    
-    @pyconverter.when_type
-    """
-    return pyobj
-
-# The default conversion for lists seems to make them a nested list. That has
-# some advantages, but is rarely convenient, so for interactive use, we convert
-# lists to a numpy array, which becomes an R vector.
-@pyconverter.when_type(list)
-def pyconverter_list(pyobj):
-    return np.asarray(pyobj)
-
-if pandas2ri is None:
-    # pandas2ri was new in rpy2 2.3.3, so for now we'll fallback to pandas'
-    # conversion function.
-    try:
-        from pandas import DataFrame
-        from pandas.rpy.common import convert_to_r_dataframe
-        @pyconverter.when_type(DataFrame)
-        def pyconverter_dataframe(pyobj):
-            return convert_to_r_dataframe(pyobj, strings_as_factors=True)
-    except ImportError:
-        pass
-
-@magics_class
-class RMagics(Magics):
-    """A set of magics useful for interactive work with R via rpy2.
-    """
-
-    def __init__(self, shell, Rconverter=Rconverter,
-                 pyconverter=pyconverter,
-                 cache_display_data=False):
-        """
-        Parameters
-        ----------
-
-        shell : IPython shell
-        
-        Rconverter : callable
-            To be called on values taken from R before putting them in the
-            IPython namespace.
-
-        pyconverter : callable
-            To be called on values in ipython namespace before 
-            assigning to variables in rpy2.
-
-        cache_display_data : bool
-            If True, the published results of the final call to R are 
-            cached in the variable 'display_cache'.
-
-        """
-        super(RMagics, self).__init__(shell)
-        self.cache_display_data = cache_display_data
-
-        self.r = ro.R()
-
-        self.Rstdout_cache = []
-        self.pyconverter = pyconverter
-        self.Rconverter = Rconverter
-
-    def eval(self, line):
-        '''
-        Parse and evaluate a line of R code with rpy2.
-        Returns the output to R's stdout() connection, 
-        the value generated by evaluating the code, and a
-        boolean indicating whether the return value would be
-        visible if the line of code were evaluated in an R REPL.
-        
-        R Code evaluation and visibility determination are
-        done via an R call of the form withVisible({<code>})
-        
-        '''
-        old_writeconsole = ri.get_writeconsole()
-        ri.set_writeconsole(self.write_console)
-        try:
-            res = ro.r("withVisible({%s\n})" % line)
-            value = res[0] #value (R object)
-            visible = ro.conversion.ri2py(res[1])[0] #visible (boolean)
-        except (ri.RRuntimeError, ValueError) as exception:
-            warning_or_other_msg = self.flush() # otherwise next return seems to have copy of error
-            raise RInterpreterError(line, str_to_unicode(str(exception)), warning_or_other_msg)
-        text_output = self.flush()
-        ri.set_writeconsole(old_writeconsole)
-        return text_output, value, visible
-
-    def write_console(self, output):
-        '''
-        A hook to capture R's stdout in a cache.
-        '''
-        self.Rstdout_cache.append(output)
-
-    def flush(self):
-        '''
-        Flush R's stdout cache to a string, returning the string.
-        '''
-        value = ''.join([str_to_unicode(s, 'utf-8') for s in self.Rstdout_cache])
-        self.Rstdout_cache = []
-        return value
-
-    @needs_local_scope
-    @line_magic
-    def Rpush(self, line, local_ns=None):
-        '''
-        A line-level magic for R that pushes
-        variables from python to rpy2. The line should be made up
-        of whitespace separated variable names in the IPython
-        namespace::
-
-            In [7]: import numpy as np
-
-            In [8]: X = np.array([4.5,6.3,7.9])
-
-            In [9]: X.mean()
-            Out[9]: 6.2333333333333343
-
-            In [10]: %Rpush X
-
-            In [11]: %R mean(X)
-            Out[11]: array([ 6.23333333])
-
-        '''
-        if local_ns is None:
-            local_ns = {}
-
-        inputs = line.split(' ')
-        for input in inputs:
-            try:
-                val = local_ns[input]
-            except KeyError:
-                try:
-                    val = self.shell.user_ns[input]
-                except KeyError:
-                    # reraise the KeyError as a NameError so that it looks like
-                    # the standard python behavior when you use an unnamed
-                    # variable
-                    raise NameError("name '%s' is not defined" % input)
-
-            self.r.assign(input, self.pyconverter(val))
-
-    @magic_arguments()
-    @argument(
-        '-d', '--as_dataframe', action='store_true',
-        default=False,
-        help='Convert objects to data.frames before returning to ipython.'
-        )
-    @argument(
-        'outputs',
-        nargs='*',
-        )
-    @line_magic
-    def Rpull(self, line):
-        '''
-        A line-level magic for R that pulls
-        variables from python to rpy2::
-
-            In [18]: _ = %R x = c(3,4,6.7); y = c(4,6,7); z = c('a',3,4)
-
-            In [19]: %Rpull x  y z
-
-            In [20]: x
-            Out[20]: array([ 3. ,  4. ,  6.7])
-
-            In [21]: y
-            Out[21]: array([ 4.,  6.,  7.])
-
-            In [22]: z
-            Out[22]:
-            array(['a', '3', '4'],
-                  dtype='|S1')
-
-
-        If --as_dataframe, then each object is returned as a structured array
-        after first passed through "as.data.frame" in R before
-        being calling self.Rconverter. 
-        This is useful when a structured array is desired as output, or
-        when the object in R has mixed data types. 
-        See the %%R docstring for more examples.
-
-        Notes
-        -----
-
-        Beware that R names can have '.' so this is not fool proof.
-        To avoid this, don't name your R objects with '.'s...
-
-        '''
-        args = parse_argstring(self.Rpull, line)
-        outputs = args.outputs
-        for output in outputs:
-            self.shell.push({output:self.Rconverter(self.r(output),dataframe=args.as_dataframe)})
-
-    @magic_arguments()
-    @argument(
-        '-d', '--as_dataframe', action='store_true',
-        default=False,
-        help='Convert objects to data.frames before returning to ipython.'
-        )
-    @argument(
-        'output',
-        nargs=1,
-        type=str,
-        )
-    @line_magic
-    def Rget(self, line):
-        '''
-        Return an object from rpy2, possibly as a structured array (if possible).
-        Similar to Rpull except only one argument is accepted and the value is 
-        returned rather than pushed to self.shell.user_ns::
-
-            In [3]: dtype=[('x', '<i4'), ('y', '<f8'), ('z', '|S1')]
-
-            In [4]: datapy = np.array([(1, 2.9, 'a'), (2, 3.5, 'b'), (3, 2.1, 'c'), (4, 5, 'e')], dtype=dtype)
-
-            In [5]: %R -i datapy
-
-            In [6]: %Rget datapy
-            Out[6]: 
-            array([['1', '2', '3', '4'],
-                   ['2', '3', '2', '5'],
-                   ['a', 'b', 'c', 'e']], 
-                  dtype='|S1')
-
-            In [7]: %Rget -d datapy
-            Out[7]: 
-            array([(1, 2.9, 'a'), (2, 3.5, 'b'), (3, 2.1, 'c'), (4, 5.0, 'e')], 
-                  dtype=[('x', '<i4'), ('y', '<f8'), ('z', '|S1')])
-
-        '''
-        args = parse_argstring(self.Rget, line)
-        output = args.output
-        return self.Rconverter(self.r(output[0]),dataframe=args.as_dataframe)
-
-
-    @magic_arguments()
-    @argument(
-        '-i', '--input', action='append',
-        help='Names of input variable from shell.user_ns to be assigned to R variables of the same names after calling self.pyconverter. Multiple names can be passed separated only by commas with no whitespace.'
-        )
-    @argument(
-        '-o', '--output', action='append',
-        help='Names of variables to be pushed from rpy2 to shell.user_ns after executing cell body and applying self.Rconverter. Multiple names can be passed separated only by commas with no whitespace.'
-        )
-    @argument(
-        '-w', '--width', type=int,
-        help='Width of png plotting device sent as an argument to *png* in R.'
-        )
-    @argument(
-        '-h', '--height', type=int,
-        help='Height of png plotting device sent as an argument to *png* in R.'
-        )
-
-    @argument(
-        '-d', '--dataframe', action='append',
-        help='Convert these objects to data.frames and return as structured arrays.'
-        )
-    @argument(
-        '-u', '--units', type=unicode_type, choices=["px", "in", "cm", "mm"],
-        help='Units of png plotting device sent as an argument to *png* in R. One of ["px", "in", "cm", "mm"].'
-        )
-    @argument(
-        '-r', '--res', type=int,
-        help='Resolution of png plotting device sent as an argument to *png* in R. Defaults to 72 if *units* is one of ["in", "cm", "mm"].'
-        )
-    @argument(
-        '-p', '--pointsize', type=int,
-        help='Pointsize of png plotting device sent as an argument to *png* in R.'
-        )
-    @argument(
-        '-b', '--bg',
-        help='Background of png plotting device sent as an argument to *png* in R.'
-        )
-    @argument(
-        '-n', '--noreturn',
-        help='Force the magic to not return anything.',
-        action='store_true',
-        default=False
-        )
-    @argument(
-        'code',
-        nargs='*',
-        )
-    @needs_local_scope
-    @line_cell_magic
-    def R(self, line, cell=None, local_ns=None):
-        '''
-        Execute code in R, and pull some of the results back into the Python namespace.
-
-        In line mode, this will evaluate an expression and convert the returned value to a Python object.
-        The return value is determined by rpy2's behaviour of returning the result of evaluating the
-        final line. 
-
-        Multiple R lines can be executed by joining them with semicolons::
-
-            In [9]: %R X=c(1,4,5,7); sd(X); mean(X)
-            Out[9]: array([ 4.25])
-
-        In cell mode, this will run a block of R code. The resulting value
-        is printed if it would printed be when evaluating the same code 
-        within a standard R REPL.
-        
-        Nothing is returned to python by default in cell mode::
-
-            In [10]: %%R
-               ....: Y = c(2,4,3,9)
-               ....: summary(lm(Y~X))
-
-            Call:
-            lm(formula = Y ~ X)
-
-            Residuals:
-                1     2     3     4
-             0.88 -0.24 -2.28  1.64
-
-            Coefficients:
-                        Estimate Std. Error t value Pr(>|t|)
-            (Intercept)   0.0800     2.3000   0.035    0.975
-            X             1.0400     0.4822   2.157    0.164
-
-            Residual standard error: 2.088 on 2 degrees of freedom
-            Multiple R-squared: 0.6993,Adjusted R-squared: 0.549
-            F-statistic: 4.651 on 1 and 2 DF,  p-value: 0.1638
-
-        In the notebook, plots are published as the output of the cell::
-
-            %R plot(X, Y)
-
-        will create a scatter plot of X bs Y.
-
-        If cell is not None and line has some R code, it is prepended to
-        the R code in cell.
-
-        Objects can be passed back and forth between rpy2 and python via the -i -o flags in line::
-
-            In [14]: Z = np.array([1,4,5,10])
-
-            In [15]: %R -i Z mean(Z)
-            Out[15]: array([ 5.])
-
-
-            In [16]: %R -o W W=Z*mean(Z)
-            Out[16]: array([  5.,  20.,  25.,  50.])
-
-            In [17]: W
-            Out[17]: array([  5.,  20.,  25.,  50.])
-
-        The return value is determined by these rules:
-
-        * If the cell is not None, the magic returns None.
-
-        * If the cell evaluates as False, the resulting value is returned
-          unless the final line prints something to the console, in
-          which case None is returned.
-
-        * If the final line results in a NULL value when evaluated
-          by rpy2, then None is returned.
-
-        * No attempt is made to convert the final value to a structured array.
-          Use the --dataframe flag or %Rget to push / return a structured array.
-
-        * If the -n flag is present, there is no return value.
-
-        * A trailing ';' will also result in no return value as the last
-          value in the line is an empty string.
-
-        The --dataframe argument will attempt to return structured arrays. 
-        This is useful for dataframes with
-        mixed data types. Note also that for a data.frame, 
-        if it is returned as an ndarray, it is transposed::
-
-            In [18]: dtype=[('x', '<i4'), ('y', '<f8'), ('z', '|S1')]
-
-            In [19]: datapy = np.array([(1, 2.9, 'a'), (2, 3.5, 'b'), (3, 2.1, 'c'), (4, 5, 'e')], dtype=dtype)
-
-            In [20]: %%R -o datar
-            datar = datapy
-               ....: 
-
-            In [21]: datar
-            Out[21]: 
-            array([['1', '2', '3', '4'],
-                   ['2', '3', '2', '5'],
-                   ['a', 'b', 'c', 'e']], 
-                  dtype='|S1')
-
-            In [22]: %%R -d datar
-            datar = datapy
-               ....: 
-
-            In [23]: datar
-            Out[23]: 
-            array([(1, 2.9, 'a'), (2, 3.5, 'b'), (3, 2.1, 'c'), (4, 5.0, 'e')], 
-                  dtype=[('x', '<i4'), ('y', '<f8'), ('z', '|S1')])
-
-        The --dataframe argument first tries colnames, then names.
-        If both are NULL, it returns an ndarray (i.e. unstructured)::
-
-            In [1]: %R mydata=c(4,6,8.3); NULL
-
-            In [2]: %R -d mydata
-
-            In [3]: mydata
-            Out[3]: array([ 4. ,  6. ,  8.3])
-
-            In [4]: %R names(mydata) = c('a','b','c'); NULL
-
-            In [5]: %R -d mydata
-
-            In [6]: mydata
-            Out[6]: 
-            array((4.0, 6.0, 8.3), 
-                  dtype=[('a', '<f8'), ('b', '<f8'), ('c', '<f8')])
-
-            In [7]: %R -o mydata
-
-            In [8]: mydata
-            Out[8]: array([ 4. ,  6. ,  8.3])
-
-        '''
-
-        args = parse_argstring(self.R, line)
-
-        # arguments 'code' in line are prepended to
-        # the cell lines
-
-        if cell is None:
-            code = ''
-            return_output = True
-            line_mode = True
-        else:
-            code = cell
-            return_output = False
-            line_mode = False
-
-        code = ' '.join(args.code) + code
-
-        # if there is no local namespace then default to an empty dict
-        if local_ns is None:
-            local_ns = {}
-
-        if args.input:
-            for input in ','.join(args.input).split(','):
-                try:
-                    val = local_ns[input]
-                except KeyError:
-                    try:
-                        val = self.shell.user_ns[input]
-                    except KeyError:
-                        raise NameError("name '%s' is not defined" % input)
-                self.r.assign(input, self.pyconverter(val))
-
-        if getattr(args, 'units') is not None:
-            if args.units != "px" and getattr(args, 'res') is None:
-                args.res = 72
-            args.units = '"%s"' % args.units
-
-        png_argdict = dict([(n, getattr(args, n)) for n in ['units', 'res', 'height', 'width', 'bg', 'pointsize']])
-        png_args = ','.join(['%s=%s' % (o,v) for o, v in png_argdict.items() if v is not None])
-        # execute the R code in a temporary directory
-
-        tmpd = tempfile.mkdtemp()
-        self.r('png("%s/Rplots%%03d.png",%s)' % (tmpd.replace('\\', '/'), png_args))
-
-        text_output = ''
-        try:
-            if line_mode:
-                for line in code.split(';'):
-                    text_result, result, visible = self.eval(line)
-                    text_output += text_result
-                if text_result:
-                    # the last line printed something to the console so we won't return it
-                    return_output = False
-            else:
-                text_result, result, visible = self.eval(code)
-                text_output += text_result
-                if visible:
-                    old_writeconsole = ri.get_writeconsole()
-                    ri.set_writeconsole(self.write_console) 
-                    ro.r.show(result)
-                    text_output += self.flush()
-                    ri.set_writeconsole(old_writeconsole)
-        
-        except RInterpreterError as e:
-            print(e.stdout)
-            if not e.stdout.endswith(e.err):
-                print(e.err)
-            rmtree(tmpd)
-            return
-        finally:
-            self.r('dev.off()')
-
-        # read out all the saved .png files
-
-        images = [open(imgfile, 'rb').read() for imgfile in glob("%s/Rplots*png" % tmpd)]
-
-        # now publish the images
-        # mimicking IPython/zmq/pylab/backend_inline.py
-        fmt = 'png'
-        mimetypes = { 'png' : 'image/png', 'svg' : 'image/svg+xml' }
-        mime = mimetypes[fmt]
-
-        # publish the printed R objects, if any
-
-        display_data = []
-        if text_output:
-            display_data.append(('RMagic.R', {'text/plain':text_output}))
-
-        # flush text streams before sending figures, helps a little with output
-        for image in images:
-            # synchronization in the console (though it's a bandaid, not a real sln)
-            sys.stdout.flush(); sys.stderr.flush()
-            display_data.append(('RMagic.R', {mime: image}))
-
-        # kill the temporary directory
-        rmtree(tmpd)
-
-        # try to turn every output into a numpy array
-        # this means that output are assumed to be castable
-        # as numpy arrays
-
-        if args.output:
-            for output in ','.join(args.output).split(','):
-                self.shell.push({output:self.Rconverter(self.r(output), dataframe=False)})
-
-        if args.dataframe:
-            for output in ','.join(args.dataframe).split(','):
-                self.shell.push({output:self.Rconverter(self.r(output), dataframe=True)})
-
-        for tag, disp_d in display_data:
-            publish_display_data(data=disp_d, source=tag)
-
-        # this will keep a reference to the display_data
-        # which might be useful to other objects who happen to use
-        # this method
-
-        if self.cache_display_data:
-            self.display_cache = display_data
-
-        # if in line mode and return_output, return the result as an ndarray
-        if return_output and not args.noreturn:
-            if result != ri.NULL:
-                return self.Rconverter(result, dataframe=False)
-
-__doc__ = __doc__.format(
-                R_DOC = dedent(RMagics.R.__doc__),
-                RPUSH_DOC = dedent(RMagics.Rpush.__doc__),
-                RPULL_DOC = dedent(RMagics.Rpull.__doc__),
-                RGET_DOC = dedent(RMagics.Rget.__doc__)
-)
-
-
 def load_ipython_extension(ip):
     """Load the extension in IPython."""
-    warnings.warn("The rmagic extension in IPython is deprecated in favour of "
-            "rpy2.ipython. If available, that will be loaded instead.\n"
-            "http://rpy.sourceforge.net/")
-    try:
-        import rpy2.ipython
-    except ImportError:
-        pass  # Fall back to our own implementation for now
-    else:
-        return rpy2.ipython.load_ipython_extension(ip)
-
-    ip.register_magics(RMagics)
-    # Initialising rpy2 interferes with readline. Since, at this point, we've
-    # probably just loaded rpy2, we reset the delimiters. See issue gh-2759.
-    if ip.has_readline:
-        ip.readline.set_completer_delims(ip.readline_delims)
+    warnings.warn("The rmagic extension in IPython has moved to "
+            "`rpy2.ipython`, please see `rpy2` documentation.")
diff --git a/IPython/extensions/sympyprinting.py b/IPython/extensions/sympyprinting.py
index 899a4c8..258624f 100644
--- a/IPython/extensions/sympyprinting.py
+++ b/IPython/extensions/sympyprinting.py
@@ -1,4 +1,6 @@
 """
+**DEPRECATED**
+
 A print function that pretty prints sympy Basic objects.
 
 :moduleauthor: Brian Granger
@@ -17,154 +19,14 @@ maintained here for backwards compatablitiy with old SymPy versions.
 """
 #-----------------------------------------------------------------------------
 #  Copyright (C) 2008  The IPython Development Team
-#
-#  Distributed under the terms of the BSD License.  The full license is in
-#  the file COPYING, distributed as part of this software.
 #-----------------------------------------------------------------------------
 
 #-----------------------------------------------------------------------------
 # Imports
 #-----------------------------------------------------------------------------
 
-from IPython.lib.latextools import latex_to_png
-from IPython.utils.py3compat import string_types
-
-try:
-    from sympy import pretty, latex
-except ImportError:
-    pass
-
 import warnings
 
-#-----------------------------------------------------------------------------
-# Definitions of special display functions for use with IPython
-#-----------------------------------------------------------------------------
-
-def print_basic_unicode(o, p, cycle):
-    """A function to pretty print sympy Basic objects."""
-    if cycle:
-        return p.text('Basic(...)')
-    out = pretty(o, use_unicode=True)
-    if '\n' in out:
-        p.text(u'\n')
-    p.text(out)
-
-
-def print_png(o):
-    """
-    A function to display sympy expression using inline style LaTeX in PNG.
-    """
-    s = latex(o, mode='inline')
-    # mathtext does not understand certain latex flags, so we try to replace
-    # them with suitable subs.
-    s = s.replace('\\operatorname','')
-    s = s.replace('\\overline', '\\bar')
-    png = latex_to_png(s)
-    return png
-
-
-def print_display_png(o):
-    """
-    A function to display sympy expression using display style LaTeX in PNG.
-    """
-    s = latex(o, mode='plain')
-    s = s.strip('$')
-    # As matplotlib does not support display style, dvipng backend is
-    # used here.
-    png = latex_to_png(s, backend='dvipng', wrap=True)
-    return png
-
-
-def can_print_latex(o):
-    """
-    Return True if type o can be printed with LaTeX.
-
-    If o is a container type, this is True if and only if every element of o
-    can be printed with LaTeX.
-    """
-    import sympy
-    if isinstance(o, (list, tuple, set, frozenset)):
-        return all(can_print_latex(i) for i in o)
-    elif isinstance(o, dict):
-        return all((isinstance(i, string_types) or can_print_latex(i)) and can_print_latex(o[i]) for i in o)
-    elif isinstance(o,(sympy.Basic, sympy.matrices.Matrix, int, long, float)):
-        return True
-    return False
-
-def print_latex(o):
-    """A function to generate the latex representation of sympy
-    expressions."""
-    if can_print_latex(o):
-        s = latex(o, mode='plain')
-        s = s.replace('\\dag','\\dagger')
-        s = s.strip('$')
-        return '$$%s$$' % s
-    # Fallback to the string printer
-    return None
-
-_loaded = False
-
 def load_ipython_extension(ip):
-    """Load the extension in IPython."""
-    import sympy
-
-    # sympyprinting extension has been moved to SymPy as of 0.7.2, if it
-    # exists there, warn the user and import it
-    try:
-        import sympy.interactive.ipythonprinting
-    except ImportError:
-        pass
-    else:
-        warnings.warn("The sympyprinting extension in IPython is deprecated, "
-            "use 'from sympy import init_printing; init_printing()'")
-        ip.extension_manager.load_extension('sympy.interactive.ipythonprinting')
-        return
-
-    global _loaded
-    if not _loaded:
-        plaintext_formatter = ip.display_formatter.formatters['text/plain']
-
-        for cls in (object, str):
-            plaintext_formatter.for_type(cls, print_basic_unicode)
-
-        printable_containers = [list, tuple]
-
-        # set and frozen set were broken with SymPy's latex() function, but
-        # was fixed in the 0.7.1-git development version. See
-        # http://code.google.com/p/sympy/issues/detail?id=3062.
-        if sympy.__version__ > '0.7.1':
-            printable_containers += [set, frozenset]
-        else:
-            plaintext_formatter.for_type(cls, print_basic_unicode)
-
-        plaintext_formatter.for_type_by_name(
-            'sympy.core.basic', 'Basic', print_basic_unicode
-        )
-        plaintext_formatter.for_type_by_name(
-            'sympy.matrices.matrices', 'Matrix', print_basic_unicode
-        )
-
-        png_formatter = ip.display_formatter.formatters['image/png']
-
-        png_formatter.for_type_by_name(
-            'sympy.core.basic', 'Basic', print_png
-        )
-        png_formatter.for_type_by_name(
-            'sympy.matrices.matrices', 'Matrix', print_display_png
-        )
-        for cls in [dict, int, long, float] + printable_containers:
-            png_formatter.for_type(cls, print_png)
-
-        latex_formatter = ip.display_formatter.formatters['text/latex']
-        latex_formatter.for_type_by_name(
-            'sympy.core.basic', 'Basic', print_latex
-        )
-        latex_formatter.for_type_by_name(
-            'sympy.matrices.matrices', 'Matrix', print_latex
-        )
-
-        for cls in printable_containers:
-            # Use LaTeX only if every element is printable by latex
-            latex_formatter.for_type(cls, print_latex)
-
-        _loaded = True
+    warnings.warn("The sympyprinting extension in IPython is deprecated, "
+        "use 'from sympy import init_printing; init_printing()'")