restore __future__ to print error in Python 2

setup.py

@@ -1,296 +1,297 b''
 #!/usr/bin/env python
 # -*- coding: utf-8 -*-
 """Setup script for IPython.
 
 Under Posix environments it works like a typical setup.py script.
 Under Windows, the command sdist is not supported, since IPython
 requires utilities which are not available under Windows."""
 
 #-----------------------------------------------------------------------------
 #  Copyright (c) 2008-2011, IPython Development Team.
 #  Copyright (c) 2001-2007, Fernando Perez <[e-mail]>
 #  Copyright (c) 2001, Janko Hauser <[e-mail]>
 #  Copyright (c) 2001, Nathaniel Gray <[e-mail]>
 #
 #  Distributed under the terms of the Modified BSD License.
 #
 #  The full license is in the file COPYING.rst, distributed with this software.
 #-----------------------------------------------------------------------------
 
 #-----------------------------------------------------------------------------
 # Minimal Python version sanity check
 #-----------------------------------------------------------------------------
+from __future__ import print_function
 
 import sys
 
 # This check is also made in IPython/__init__, don't forget to update both when
 # changing Python version requirements.
 if sys.version_info < (3,3):
     error = """
 IPython 6.0+ does not support Python 2.6, 2.7, 3.0, 3.1, or 3.2.
 When using Python 2.7, please install IPython 5.x LTS Long Term Support version.
 Beginning with IPython 6.0, Python 3.3 and above is required.
 
 See IPython `README.rst` file for more information:
 
     https://github.com/ipython/ipython/blob/master/README.rst
 
 """
 
     print(error, file=sys.stderr)
     sys.exit(1)
 
 # At least we're on the python version we need, move on.
 
 #-------------------------------------------------------------------------------
 # Imports
 #-------------------------------------------------------------------------------
 
 # Stdlib imports
 import os
 
 from glob import glob
 
 # BEFORE importing distutils, remove MANIFEST. distutils doesn't properly
 # update it when the contents of directories change.
 if os.path.exists('MANIFEST'): os.remove('MANIFEST')
 
 from distutils.core import setup
 
 # Our own imports
 from setupbase import target_update
 
 from setupbase import (
     setup_args,
     find_packages,
     find_package_data,
     check_package_data_first,
     find_entry_points,
     build_scripts_entrypt,
     find_data_files,
     git_prebuild,
     install_symlinked,
     install_lib_symlink,
     install_scripts_for_symlink,
     unsymlink,
 )
 
 isfile = os.path.isfile
 pjoin = os.path.join
 
 #-------------------------------------------------------------------------------
 # Handle OS specific things
 #-------------------------------------------------------------------------------
 
 if os.name in ('nt','dos'):
     os_name = 'windows'
 else:
     os_name = os.name
 
 # Under Windows, 'sdist' has not been supported.  Now that the docs build with
 # Sphinx it might work, but let's not turn it on until someone confirms that it
 # actually works.
 if os_name == 'windows' and 'sdist' in sys.argv:
     print('The sdist command is not available under Windows.  Exiting.')
     sys.exit(1)
 
 
 #-------------------------------------------------------------------------------
 # Things related to the IPython documentation
 #-------------------------------------------------------------------------------
 
 # update the manuals when building a source dist
 if len(sys.argv) >= 2 and sys.argv[1] in ('sdist','bdist_rpm'):
 
     # List of things to be updated. Each entry is a triplet of args for
     # target_update()
     to_update = [
                  ('docs/man/ipython.1.gz',
                   ['docs/man/ipython.1'],
                   'cd docs/man && gzip -9c ipython.1 > ipython.1.gz'),
                  ]
 
 
     [ target_update(*t) for t in to_update ]
 
 #---------------------------------------------------------------------------
 # Find all the packages, package data, and data_files
 #---------------------------------------------------------------------------
 
 packages = find_packages()
 package_data = find_package_data()
 
 data_files = find_data_files()
 
 setup_args['packages'] = packages
 setup_args['package_data'] = package_data
 setup_args['data_files'] = data_files
 
 #---------------------------------------------------------------------------
 # custom distutils commands
 #---------------------------------------------------------------------------
 # imports here, so they are after setuptools import if there was one
 from distutils.command.sdist import sdist
 from distutils.command.upload import upload
 
 class UploadWindowsInstallers(upload):
 
     description = "Upload Windows installers to PyPI (only used from tools/release_windows.py)"
     user_options = upload.user_options + [
         ('files=', 'f', 'exe file (or glob) to upload')
     ]
     def initialize_options(self):
         upload.initialize_options(self)
         meta = self.distribution.metadata
         base = '{name}-{version}'.format(
             name=meta.get_name(),
             version=meta.get_version()
         )
         self.files = os.path.join('dist', '%s.*.exe' % base)
 
     def run(self):
         for dist_file in glob(self.files):
             self.upload_file('bdist_wininst', 'any', dist_file)
 
 setup_args['cmdclass'] = {
     'build_py': \
             check_package_data_first(git_prebuild('IPython')),
     'sdist' : git_prebuild('IPython', sdist),
     'upload_wininst' : UploadWindowsInstallers,
     'symlink': install_symlinked,
     'install_lib_symlink': install_lib_symlink,
     'install_scripts_sym': install_scripts_for_symlink,
     'unsymlink': unsymlink,
 }
 
 
 #---------------------------------------------------------------------------
 # Handle scripts, dependencies, and setuptools specific things
 #---------------------------------------------------------------------------
 
 # For some commands, use setuptools.  Note that we do NOT list install here!
 # If you want a setuptools-enhanced install, just run 'setupegg.py install'
 needs_setuptools = set(('develop', 'release', 'bdist_egg', 'bdist_rpm',
            'bdist', 'bdist_dumb', 'bdist_wininst', 'bdist_wheel',
            'egg_info', 'easy_install', 'upload', 'install_egg_info',
             ))
 
 if len(needs_setuptools.intersection(sys.argv)) > 0:
     import setuptools
 
 # This dict is used for passing extra arguments that are setuptools
 # specific to setup
 setuptools_extra_args = {}
 
 # setuptools requirements
 
 extras_require = dict(
     parallel = ['ipyparallel'],
     qtconsole = ['qtconsole'],
     doc = ['Sphinx>=1.3'],
     test = ['nose>=0.10.1', 'requests', 'testpath', 'pygments', 'nbformat', 'ipykernel', 'numpy'],
     terminal = [],
     kernel = ['ipykernel'],
     nbformat = ['nbformat'],
     notebook = ['notebook', 'ipywidgets'],
     nbconvert = ['nbconvert'],
 )
 
 install_requires = [
     'setuptools>=18.5',
     'decorator',
     'pickleshare',
     'simplegeneric>0.8',
     'traitlets>=4.2',
     'prompt_toolkit>=1.0.3,<2.0.0',
     'pygments',
 ]
 
 # Platform-specific dependencies:
 # This is the correct way to specify these,
 # but requires pip >= 6. pip < 6 ignores these.
 
 extras_require.update({
     ':python_version == "2.7"': ['backports.shutil_get_terminal_size'],
     ':python_version == "2.7" or python_version == "3.3"': ['pathlib2'],
     ':sys_platform != "win32"': ['pexpect'],
     ':sys_platform == "darwin"': ['appnope'],
     ':sys_platform == "win32"': ['colorama'],
     ':sys_platform == "win32" and python_version < "3.6"': ['win_unicode_console>=0.5'],
     'test:python_version == "2.7"': ['mock'],
 })
 # FIXME: re-specify above platform dependencies for pip < 6
 # These would result in non-portable bdists.
 if not any(arg.startswith('bdist') for arg in sys.argv):
     if sys.version_info < (3, 3):
         extras_require['test'].append('mock')
 
     if sys.platform == 'darwin':
         install_requires.extend(['appnope'])
 
     if not sys.platform.startswith('win'):
         install_requires.append('pexpect')
 
     # workaround pypa/setuptools#147, where setuptools misspells
     # platform_python_implementation as python_implementation
     if 'setuptools' in sys.modules:
         for key in list(extras_require):
             if 'platform_python_implementation' in key:
                 new_key = key.replace('platform_python_implementation', 'python_implementation')
                 extras_require[new_key] = extras_require.pop(key)
 
 everything = set()
 for key, deps in extras_require.items():
     if ':' not in key:
         everything.update(deps)
 extras_require['all'] = everything
 
 if 'setuptools' in sys.modules:
     setuptools_extra_args['python_requires'] = '>=3.3'
     setuptools_extra_args['zip_safe'] = False
     setuptools_extra_args['entry_points'] = {
         'console_scripts': find_entry_points(),
         'pygments.lexers': [
             'ipythonconsole = IPython.lib.lexers:IPythonConsoleLexer',
             'ipython = IPython.lib.lexers:IPythonLexer',
             'ipython3 = IPython.lib.lexers:IPython3Lexer',
         ],
     }
     setup_args['extras_require'] = extras_require
     requires = setup_args['install_requires'] = install_requires
 
     # Script to be run by the windows binary installer after the default setup
     # routine, to add shortcuts and similar windows-only things.  Windows
     # post-install scripts MUST reside in the scripts/ dir, otherwise distutils
     # doesn't find them.
     if 'bdist_wininst' in sys.argv:
         if len(sys.argv) > 2 and \
                ('sdist' in sys.argv or 'bdist_rpm' in sys.argv):
             print("ERROR: bdist_wininst must be run alone. Exiting.", file=sys.stderr)
             sys.exit(1)
         setup_args['data_files'].append(
             ['Scripts', ('scripts/ipython.ico', 'scripts/ipython_nb.ico')])
         setup_args['scripts'] = [pjoin('scripts','ipython_win_post_install.py')]
         setup_args['options'] = {"bdist_wininst":
                                  {"install_script":
                                   "ipython_win_post_install.py"}}
 
 else:
     # scripts has to be a non-empty list, or install_scripts isn't called
     setup_args['scripts'] = [e.split('=')[0].strip() for e in find_entry_points()]
 
     setup_args['cmdclass']['build_scripts'] = build_scripts_entrypt
 
 #---------------------------------------------------------------------------
 # Do the actual setup now
 #---------------------------------------------------------------------------
 
 setup_args.update(setuptools_extra_args)
 
 
 
 def main():
     setup(**setup_args)
 
 if __name__ == '__main__':
     main()