├── .gitignore ├── .travis.yml ├── LICENSE.txt ├── README.rst ├── _test_package ├── __init__.py ├── parse_error.py ├── plain_module.py ├── test_module.py └── token_error.py ├── print_statement.py ├── setup.cfg ├── setup.py └── test_print_statement.py /.gitignore: -------------------------------------------------------------------------------- 1 | # Byte-compiled / optimized / DLL files 2 | __pycache__/ 3 | *.py[cod] 4 | *$py.class 5 | 6 | # C extensions 7 | *.so 8 | 9 | # Distribution / packaging 10 | .Python 11 | env/ 12 | build/ 13 | develop-eggs/ 14 | dist/ 15 | downloads/ 16 | eggs/ 17 | .eggs/ 18 | lib/ 19 | lib64/ 20 | parts/ 21 | sdist/ 22 | var/ 23 | *.egg-info/ 24 | .installed.cfg 25 | *.egg 26 | 27 | # PyInstaller 28 | # Usually these files are written by a python script from a template 29 | # before PyInstaller builds the exe, so as to inject date/other infos into it. 30 | *.manifest 31 | *.spec 32 | 33 | # Installer logs 34 | pip-log.txt 35 | pip-delete-this-directory.txt 36 | 37 | # Unit test / coverage reports 38 | htmlcov/ 39 | .tox/ 40 | .coverage 41 | .coverage.* 42 | .cache 43 | nosetests.xml 44 | coverage.xml 45 | *,cover 46 | .hypothesis/ 47 | 48 | # Translations 49 | *.mo 50 | *.pot 51 | 52 | # Django stuff: 53 | *.log 54 | 55 | # Sphinx documentation 56 | docs/_build/ 57 | 58 | # PyBuilder 59 | target/ 60 | 61 | #Ipython Notebook 62 | .ipynb_checkpoints 63 | -------------------------------------------------------------------------------- /.travis.yml: -------------------------------------------------------------------------------- 1 | language: python 2 | python: 3 | - 3.4 4 | - 3.5 5 | install: 6 | - pip install . 7 | script: 8 | - python setup.py nosetests 9 | -------------------------------------------------------------------------------- /LICENSE.txt: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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Interpretation of Sections 15 and 16. 613 | 614 | If the disclaimer of warranty and limitation of liability provided 615 | above cannot be given local legal effect according to their terms, 616 | reviewing courts shall apply local law that most closely approximates 617 | an absolute waiver of all civil liability in connection with the 618 | Program, unless a warranty or assumption of liability accompanies a 619 | copy of the Program in return for a fee. 620 | 621 | END OF TERMS AND CONDITIONS 622 | 623 | How to Apply These Terms to Your New Programs 624 | 625 | If you develop a new program, and you want it to be of the greatest 626 | possible use to the public, the best way to achieve this is to make it 627 | free software which everyone can redistribute and change under these terms. 628 | 629 | To do so, attach the following notices to the program. It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | {one line to give the program's name and a brief idea of what it does.} 635 | Copyright (C) {year} {name of author} 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | {project} Copyright (C) {year} {fullname} 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /README.rst: -------------------------------------------------------------------------------- 1 | print_statement 2 | =============== 3 | 4 | Have you switched to Python 3, only to be repeatedly told this? :: 5 | 6 | SyntaxError: Missing parentheses in call to 'print' 7 | 8 | Finally your troubles are over! Reclaim your lost productivity and countless 9 | extra keystrokes by installing the print statement into your Python 3 10 | interpreter today! 11 | 12 | Usage 13 | ----- 14 | 15 | Install the module on your machine:: 16 | 17 | $ pip install print_statement 18 | 19 | Install `print_statement` into your interpreter:: 20 | 21 | >>> import print_statement 22 | >>> print_statement.install() 23 | 24 | Import the print statement and enjoy pure efficiency:: 25 | 26 | >>> from __past__ import print_statement 27 | >>> print 'Hello, world!' 28 | 29 | Because you'll never have a reason to not use this, you can have 30 | `print_statement` automatically install itself every time the interpreter 31 | starts (interactively or otherwise):: 32 | 33 | $ python -m print_statement install 34 | 35 | In the extremely unlikely event that you later want to remove 36 | `print_statement` from your machine, remember to undo this first:: 37 | 38 | $ python -m print_statement uninstall 39 | $ pip uninstall print_statement 40 | 41 | Features 42 | -------- 43 | 44 | Need to render text to the screen? :: 45 | 46 | print 'Who has time for parentheses?' 47 | 48 | How about printing to a file? You don't need keyword arguments taking up 49 | valuable bytes! :: 50 | 51 | print >>file, 'And of course you want to use this cool chevron!' 52 | 53 | Need to suppress that trailing newline? With a single comma, you can save a 54 | massive *eight* characters! :: 55 | 56 | print 'feel', 'that', 'efficiency', 57 | 58 | FAQ 59 | --- 60 | 61 | **Q: Will this work in scripts?** 62 | 63 | A: Not right now, but it will work for imported modules, as long as 64 | ``print_statement.install()`` is called first. 65 | You can do this automatically with ``python -m print_statement install``. 66 | 67 | **Q: Is this a hack?** 68 | 69 | A: Absolutely. 70 | 71 | **Q: Can I use this in production?** 72 | 73 | A: Please don't. (``2to3 -f print `` will convert your 74 | scripts for use by the unenlightened.) 75 | -------------------------------------------------------------------------------- /_test_package/__init__.py: -------------------------------------------------------------------------------- 1 | """For use in `test_print_statement.TestImport`.""" 2 | from __past__ import print_statement 3 | 4 | 5 | def test(file): 6 | print >>file, __name__ 7 | -------------------------------------------------------------------------------- /_test_package/parse_error.py: -------------------------------------------------------------------------------- 1 | from __past__ import print_statement 2 | 3 | 4 | try: 5 | -------------------------------------------------------------------------------- /_test_package/plain_module.py: -------------------------------------------------------------------------------- 1 | def test(file): 2 | print(__name__, file=file) 3 | -------------------------------------------------------------------------------- /_test_package/test_module.py: -------------------------------------------------------------------------------- 1 | from __past__ import print_statement 2 | 3 | 4 | def test(file): 5 | print >>file, __name__ 6 | -------------------------------------------------------------------------------- /_test_package/token_error.py: -------------------------------------------------------------------------------- 1 | from __past__ import print_statement 2 | 3 | 4 | """ 5 | -------------------------------------------------------------------------------- /print_statement.py: -------------------------------------------------------------------------------- 1 | import argparse 2 | import importlib 3 | import importlib.machinery 4 | import importlib.util 5 | import logging 6 | import os 7 | import sys 8 | from ctypes import c_char_p, c_size_t, c_void_p, cast, memmove, pythonapi, CFUNCTYPE 9 | from lib2to3.refactor import RefactoringTool 10 | from lib2to3.pgen2.parse import ParseError 11 | from lib2to3.pgen2.tokenize import TokenError 12 | 13 | 14 | assert sys.version_info >= (3, 4), 'print_statement requires Python 3.4+' 15 | 16 | 17 | logger = logging.getLogger(__name__) 18 | logger.setLevel(logging.CRITICAL) 19 | 20 | 21 | def refactor(script, name=''): 22 | # RefactoringTool.refactor_string seems to have problems parsing 23 | # if the input string doesn't end with a newline. 24 | script += '\n' 25 | try: 26 | script = _refactor(script, name) 27 | except TokenError as err: 28 | msg, (lineno, offset) = err.args 29 | raise _syntax_error(msg, name, lineno, offset, script) from None 30 | except ParseError as err: 31 | msg = 'invalid syntax' 32 | _, (lineno, offset) = err.context 33 | raise _syntax_error(msg, name, lineno, offset, script) from None 34 | assert script[-1] == '\n' 35 | return script[:-1] 36 | 37 | 38 | def _refactor(script, name): 39 | rt = RefactoringTool(['lib2to3.fixes.fix_print']) 40 | tree = rt.refactor_string(script, name) 41 | return str(tree) 42 | 43 | 44 | def _syntax_error(msg, name, lineno, offset, script): 45 | line = script.split('\n')[lineno - 1] 46 | return SyntaxError(msg, (name, lineno, offset + 1, line)) 47 | 48 | 49 | class _Printerpreter: 50 | _MARKER = '### ^^^ context | vvv buffer ###\n' 51 | 52 | def __init__(self): 53 | self._print_statement = False 54 | self._context = [] 55 | self._buffer = [] 56 | 57 | def refactor(self, line, prompt=None): 58 | """Refactor a line from the interpreter. 59 | 60 | :param str line: a single line of input coming from the interpreter. 61 | Assumed to end with a newline or be the empty string. 62 | :param str prompt: the prompt the interpreter used when getting input. 63 | Used to determine when to reset code context. 64 | """ 65 | ps1 = getattr(sys, 'ps1', '>>> ') 66 | ps2 = getattr(sys, 'ps2', '... ') 67 | if prompt is not None: 68 | # Ignore input from anything that doesn't look like the interpreter. 69 | # WARNING: input('>>> ') looks like the interpreter. 70 | if prompt not in [ps1, ps2]: 71 | return line 72 | if prompt == ps1: 73 | self.reset() 74 | assert not line or line.endswith('\n') 75 | if self._check_past_import(line): 76 | return '\n' 77 | self._buffer.append(line) 78 | if self._print_statement: 79 | try: 80 | line = ''.join(self._context + [self._MARKER] + self._buffer) 81 | line = self._refactor(line) 82 | _, line = line.split(self._MARKER) 83 | except _IncompleteInputException: 84 | # The user hasn't finished typing their statement - 85 | # return a no-op and keep the line in the buffer. 86 | return '#\n' 87 | self._context.extend(self._buffer) 88 | self._buffer.clear() 89 | return line 90 | 91 | def _check_past_import(self, line): 92 | if self._context or self._buffer: 93 | return False 94 | if line.split() == 'from __past__ import print_statement'.split(): 95 | self._print_statement = True 96 | return True 97 | 98 | @staticmethod 99 | def _refactor(line): 100 | try: 101 | return _refactor(line, '') 102 | except TokenError as err: 103 | if err.args[0].startswith('EOF in multi-line '): 104 | logger.debug('token error involving eof - need more input') 105 | raise _IncompleteInputException 106 | logger.exception('unknown token error - interpeter should handle') 107 | return line 108 | except ParseError as err: 109 | if err.value == '': 110 | if line.endswith('\n\n'): 111 | logger.exception('unknown parse error - interpreter should handle') 112 | return line 113 | logger.debug('incomplete block - may need more input') 114 | raise _IncompleteInputException 115 | # No way to consistently treat print as a statement and function, 116 | # so we have to make sure the interpreter throws some exception. 117 | # e.g. 'var = print' => 'var = ?print' 118 | # e.g. 'print(var, file=f)' => 'print(var, file?=f)' 119 | logger.error('parse error - invalidating token') 120 | row, col = err.context[1] 121 | lines = [] 122 | for lineno, line in enumerate(line.split('\n'), start=1): 123 | if lineno == row: 124 | line = line[:col] + '?' + line[col:] 125 | lines.append(line) 126 | return '\n'.join(lines) 127 | 128 | def reset(self): 129 | assert not self._buffer 130 | self._context.clear() 131 | 132 | _printerpreter = _Printerpreter() 133 | 134 | 135 | class _IncompleteInputException(Exception): 136 | """More input is required for a complete parse.""" 137 | 138 | 139 | # Return type should be c_char_p but we need access to the pointer. 140 | PyOS_ReadlineFunctionPointer_t = CFUNCTYPE(c_void_p, c_void_p, c_void_p, c_char_p) 141 | 142 | pythonapi.PyMem_Realloc.argtypes = [c_void_p, c_size_t] 143 | pythonapi.PyMem_Realloc.restype = c_void_p 144 | 145 | 146 | @PyOS_ReadlineFunctionPointer_t 147 | def _call_readline(stdin, stdout, prompt): 148 | ptr = _original(stdin, stdout, prompt) 149 | prompt = prompt.decode() 150 | line = cast(ptr, c_char_p).value.decode(sys.stdin.encoding) 151 | logger.debug('input line %r', line) 152 | line = _printerpreter.refactor(line, prompt) 153 | logger.debug('updated line %r', line) 154 | line = line.encode(sys.stdout.encoding) 155 | # ptr points to a buffer allocated with PyMem_Malloc. 156 | size = len(line) + 1 157 | ptr = pythonapi.PyMem_Realloc(ptr, size) 158 | memmove(ptr, line, size) 159 | return ptr 160 | 161 | 162 | class _PathFinder(importlib.machinery.PathFinder): 163 | @classmethod 164 | def find_spec(cls, fullname, path=None, target=None): 165 | logger.info('loading %s', fullname) 166 | if fullname == 'rlcompleter': 167 | _install_readline() 168 | spec = super().find_spec(fullname, path=path, target=target) 169 | if not spec: 170 | return spec 171 | loader = spec.loader 172 | if isinstance(loader, importlib.machinery.SourceFileLoader): 173 | spec.loader = _SourceFileLoader(loader.name, loader.path) 174 | return spec 175 | 176 | 177 | class _SourceFileLoader(importlib.machinery.SourceFileLoader): 178 | def source_to_code(self, data, path, *, _optimize=-1): 179 | source = importlib.util.decode_source(data) 180 | source = self._refactor(source, path) 181 | return super().source_to_code(source, path, _optimize=_optimize) 182 | 183 | def _refactor(self, source, name): 184 | lines = [] 185 | do_refactor = False 186 | for line in source.split('\n'): 187 | if line.split() == 'from __past__ import print_statement'.split(): 188 | do_refactor = True 189 | line = '' 190 | lines.append(line) 191 | if do_refactor: 192 | source = '\n'.join(lines) 193 | source = refactor(source, name=name) 194 | return source 195 | 196 | 197 | _installed = False 198 | 199 | 200 | def install(): 201 | global _installed 202 | if _installed: 203 | logger.warning('print_statement already installed') 204 | return 205 | _installed = True 206 | _install_readline() 207 | index = sys.meta_path.index(importlib.machinery.PathFinder) 208 | sys.meta_path[index] = _PathFinder 209 | 210 | 211 | _original = None 212 | 213 | 214 | def _install_readline(): 215 | global _original 216 | assert _installed 217 | if _original is not None: 218 | logger.warning('readline hook already installed') 219 | return 220 | logger.info('installing readline hook') 221 | rfp = c_void_p.in_dll(pythonapi, 'PyOS_ReadlineFunctionPointer') 222 | _original = rfp.value 223 | if _original is None: 224 | logger.warning('could not install - will wait for _PathFinder') 225 | return 226 | _original = PyOS_ReadlineFunctionPointer_t(_original) 227 | rfp.value = cast(_call_readline, c_void_p).value 228 | 229 | 230 | def main(): 231 | path = os.path.dirname(__file__) 232 | path = os.path.join(path, 'print_statement.pth') 233 | parser = argparse.ArgumentParser() 234 | parser.add_argument('action', choices=['install', 'uninstall']) 235 | parser.add_argument('--path', default=path) 236 | args = parser.parse_args() 237 | if args.action == 'install': 238 | with open(args.path, 'w') as f: 239 | f.write('import print_statement; print_statement.install()') 240 | print('created ' + args.path) 241 | else: 242 | os.remove(args.path) 243 | print('deleted ' + args.path) 244 | 245 | 246 | if __name__ == '__main__': 247 | main() 248 | -------------------------------------------------------------------------------- /setup.cfg: -------------------------------------------------------------------------------- 1 | [nosetests] 2 | with-coverage=1 3 | cover-erase=1 4 | cover-package=print_statement 5 | -------------------------------------------------------------------------------- /setup.py: -------------------------------------------------------------------------------- 1 | import sys 2 | from setuptools import setup 3 | 4 | 5 | assert sys.version_info >= (3, 4), 'print_statement requires Python 3.4+' 6 | 7 | 8 | with open('README.rst') as readme: 9 | long_description = readme.read() 10 | 11 | 12 | setup( 13 | name='print_statement', 14 | version='0.1.0', 15 | description='from __past__ import print_statement', 16 | long_description=long_description, 17 | author='evan_', 18 | author_email='evanunderscore@gmail.com', 19 | url='https://pypi.python.org/pypi/print_statement', 20 | license='GNU General Public License v3', 21 | py_modules=['print_statement'], 22 | test_suite='test_print_statement', 23 | tests_require=['coverage'], 24 | setup_requires=['nose'], 25 | classifiers=[ 26 | 'Programming Language :: Python', 27 | 'Programming Language :: Python :: 3', 28 | 'Programming Language :: Python :: 3.4', 29 | 'Programming Language :: Python :: 3.5', 30 | 'License :: OSI Approved :: GNU General Public License v3 (GPLv3)', 31 | 'Operating System :: OS Independent', 32 | 'Development Status :: 3 - Alpha', 33 | 'Intended Audience :: Developers', 34 | ], 35 | keywords='print statement', 36 | ) 37 | -------------------------------------------------------------------------------- /test_print_statement.py: -------------------------------------------------------------------------------- 1 | import io 2 | import os 3 | import unittest 4 | import sys 5 | 6 | import print_statement 7 | from print_statement import refactor 8 | 9 | 10 | print_statement.install() 11 | 12 | 13 | class TestRefactor(unittest.TestCase): 14 | def test_simple(self): 15 | self.assertEqual(refactor('print 1'), 'print(1)') 16 | 17 | def test_multiple(self): 18 | self.assertEqual(refactor('print 1, 2, 3'), 'print(1, 2, 3)') 19 | 20 | def test_file(self): 21 | self.assertEqual(refactor('print >>f, 1'), 'print(1, file=f)') 22 | 23 | def test_end(self): 24 | self.assertEqual(refactor('print 1,'), "print(1, end=' ')") 25 | 26 | def test_newline(self): 27 | self.assertEqual(refactor('print 1\n'), 'print(1)\n') 28 | 29 | def test_continued(self): 30 | self.assertEqual(refactor('print 1,\\\n2'), 'print(1,\\\n2)') 31 | 32 | def test_multiline(self): 33 | self.assertEqual(refactor('print (\n1)'), 'print((\n1))') 34 | 35 | def test_multiline_string(self): 36 | self.assertEqual(refactor('print """\n1"""'), 'print("""\n1""")') 37 | 38 | def test_condition(self): 39 | self.assertEqual(refactor('if True:\n print 1'), 'if True:\n print(1)') 40 | 41 | def test_function(self): 42 | self.assertEqual(refactor('def f():\n print 1'), 'def f():\n print(1)') 43 | 44 | def test_class(self): 45 | self.assertEqual(refactor('class F:\n print 1'), 'class F:\n print(1)') 46 | 47 | 48 | class TestPrinterpreter(unittest.TestCase): 49 | def setUp(self): 50 | self.printerpreter = print_statement._Printerpreter() 51 | self.refactor = self.printerpreter.refactor 52 | self.printerpreter.refactor('from __past__ import print_statement\n') 53 | 54 | def test_simple(self): 55 | self.assertEqual(self.refactor('print 1\n'), 'print(1)\n') 56 | 57 | def test_multiple(self): 58 | self.assertEqual(self.refactor('print 1, 2, 3\n'), 'print(1, 2, 3)\n') 59 | 60 | def test_file(self): 61 | self.assertEqual(self.refactor('print >>f, 1\n'), 'print(1, file=f)\n') 62 | 63 | def test_end(self): 64 | self.assertEqual(self.refactor('print 1,\n'), "print(1, end=' ')\n") 65 | 66 | def test_continued(self): 67 | self.assertEqual(self.refactor('print 1,\\\n'), '#\n') 68 | self.assertEqual(self.refactor('2\n'), 'print(1,\\\n2)\n') 69 | 70 | def test_multiline(self): 71 | self.assertEqual(self.refactor('print (\n'), '#\n') 72 | self.assertEqual(self.refactor('1)\n'), 'print((\n1))\n') 73 | 74 | def test_multiline_string(self): 75 | self.assertEqual(self.refactor('print """\n'), '#\n') 76 | self.assertEqual(self.refactor('1"""\n'), 'print("""\n1""")\n') 77 | 78 | def test_condition(self): 79 | self.assertEqual(self.refactor('if True:\n'), '#\n') 80 | self.assertEqual(self.refactor(' print 1\n'), 'if True:\n print(1)\n') 81 | 82 | def test_function(self): 83 | self.assertEqual(self.refactor('def f():\n'), '#\n') 84 | self.assertEqual(self.refactor(' print 1\n'), 'def f():\n print(1)\n') 85 | 86 | def test_class(self): 87 | self.assertEqual(self.refactor('class F:\n'), '#\n') 88 | self.assertEqual(self.refactor(' print 1\n'), 'class F:\n print(1)\n') 89 | 90 | def test_with(self): 91 | self.assertEqual(self.refactor('with x:\n'), '#\n') 92 | self.assertEqual(self.refactor(' print 1\n'), 'with x:\n print(1)\n') 93 | 94 | def test_try(self): 95 | self.assertEqual(self.refactor('try:\n'), '#\n') 96 | self.assertEqual(self.refactor(' print 1\n'), '#\n') 97 | self.assertEqual(self.refactor('except:\n'), '#\n') 98 | self.assertEqual(self.refactor(' pass\n'), 'try:\n print(1)\nexcept:\n pass\n') 99 | 100 | def test_eof(self): 101 | self.assertEqual(self.refactor(''), '') 102 | 103 | def test_no_print_function(self): 104 | self.assertEqual(self.refactor('print print\n'), 'print ?print\n') 105 | 106 | def test_no_print_kwargs(self): 107 | self.assertEqual(self.refactor('print(1, file=f)\n'), 'print(1, file?=f)\n') 108 | 109 | def test_no_print_assignment(self): 110 | self.assertEqual(self.refactor('print = 1\n'), 'print ?= 1\n') 111 | 112 | def test_error(self): 113 | self.assertEqual(self.refactor('return return\n'), 'return ?return\n') 114 | 115 | def test_empty_block(self): 116 | """Test an empty block is allowed to end.""" 117 | self.assertEqual(self.refactor('if True:\n'), '#\n') 118 | self.assertEqual(self.refactor('\n'), 'if True:\n\n') 119 | 120 | def test_bad_try(self): 121 | """Test a try with no except is allowed to end.""" 122 | self.assertEqual(self.refactor('try:\n'), '#\n') 123 | self.assertEqual(self.refactor(' pass\n'), '#\n') 124 | self.assertEqual(self.refactor('\n'), 'try:\n pass\n\n') 125 | 126 | 127 | class TestImport(unittest.TestCase): 128 | @classmethod 129 | def setUpClass(cls): 130 | assert '_test_package' not in sys.modules 131 | 132 | def test_import_package(self): 133 | import _test_package 134 | buffer = io.StringIO() 135 | _test_package.test(buffer) 136 | buffer.seek(0) 137 | self.assertEqual(buffer.read(), '_test_package\n') 138 | self.assertEqual(_test_package.test.__module__, '_test_package') 139 | 140 | def test_import_module(self): 141 | from _test_package import test_module 142 | buffer = io.StringIO() 143 | test_module.test(buffer) 144 | buffer.seek(0) 145 | self.assertEqual(buffer.read(), '_test_package.test_module\n') 146 | self.assertEqual(test_module.test.__module__, '_test_package.test_module') 147 | 148 | def test_import_module_plain(self): 149 | from _test_package import plain_module 150 | buffer = io.StringIO() 151 | plain_module.test(buffer) 152 | buffer.seek(0) 153 | self.assertEqual(buffer.read(), '_test_package.plain_module\n') 154 | self.assertEqual(plain_module.test.__module__, '_test_package.plain_module') 155 | 156 | def test_token_error(self): 157 | with self.assertRaises(SyntaxError) as err: 158 | from _test_package import token_error 159 | filename = os.path.basename(err.exception.filename) 160 | self.assertEqual(filename, 'token_error.py') 161 | 162 | def test_syntax_error(self): 163 | with self.assertRaises(SyntaxError) as err: 164 | from _test_package import parse_error 165 | filename = os.path.basename(err.exception.filename) 166 | self.assertEqual(filename, 'parse_error.py') 167 | 168 | 169 | class TestPastImport(unittest.TestCase): 170 | def test_printerpreter(self): 171 | printer = print_statement._Printerpreter() 172 | printer.refactor('if True:\n', '>>> ') 173 | printer.refactor('from __past__ import print_statement\n', '... ') 174 | printer.refactor('"""\n', '>>> ') 175 | printer.refactor('from __past__ import print_statement\n', '... ') 176 | printer.refactor('"""\n', '... ') 177 | self.assertEqual(printer.refactor('print 1\n', '>>> '), 'print 1\n') 178 | printer.refactor('from __past__ import print_statement\n', '>>> ') 179 | self.assertEqual(printer.refactor('print 1\n', '>>> '), 'print(1)\n') 180 | --------------------------------------------------------------------------------