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.

IPython/extensions/cythonmagic.py

@@ -1,43 +1,21 b''
 # -*- coding: utf-8 -*-
 """
+**DEPRECATED**
+
 The cython magic has been integrated into Cython itself, 
 which is now released in version 0.21.
 
 cf github `Cython` organisation, `Cython` repo, under the 
 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""")

IPython/extensions/rmagic.py

@@ -1,702 +1,12 b''
 # -*- 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.
[e-mail]_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.")

IPython/extensions/sympyprinting.py

@@ -1,170 +1,32 b''
 """
+**DEPRECATED**
+
 A print function that pretty prints sympy Basic objects.
 
 :moduleauthor: Brian Granger
 
 Usage
 =====
 
 Once the extension is loaded, Sympy Basic objects are automatically
 pretty-printed.
 
 As of SymPy 0.7.2, maintenance of this extension has moved to SymPy under
 sympy.interactive.ipythonprinting, any modifications to account for changes to
 SymPy should be submitted to SymPy rather than changed here. This module is
 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()'")