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How to use cmd_exists method in avocado

Best Python code snippet using avocado_python

test_nbconvert_handlers.py

Source:test_nbconvert_handlers.py

...12    new_notebook, new_markdown_cell, new_code_cell, new_output,13)14from ipython_genutils.testing.decorators import onlyif_cmds_exist15from base64 import encodebytes16def cmd_exists(cmd):17    """Check is a command exists."""18    if shutil.which(cmd) is None:19        return False20    return True21class NbconvertAPI(object):22    """Wrapper for nbconvert API calls."""23    def __init__(self, request):24        self.request = request25    def _req(self, verb, path, body=None, params=None):26        response = self.request(verb,27                url_path_join('nbconvert', path),28                data=body, params=params,29        )30        response.raise_for_status()31        return response32    def from_file(self, format, path, name, download=False):33        return self._req('GET', url_path_join(format, path, name),34                         params={'download':download})35    def from_post(self, format, nbmodel):36        body = json.dumps(nbmodel)37        return self._req('POST', format, body)38    def list_formats(self):39        return self._req('GET', '')40png_green_pixel = encodebytes(b'\x89PNG\r\n\x1a\n\x00\x00\x00\rIHDR\x00'41b'\x00\x00\x01\x00\x00x00\x01\x08\x02\x00\x00\x00\x90wS\xde\x00\x00\x00\x0cIDAT'42b'\x08\xd7c\x90\xfb\xcf\x00\x00\x02\\\x01\x1e.~d\x87\x00\x00\x00\x00IEND\xaeB`\x82'43).decode('ascii')44class APITest(NotebookTestBase):45    def setUp(self):46        nbdir = self.notebook_dir47        if not os.path.isdir(pjoin(nbdir, 'foo')):48            subdir = pjoin(nbdir, 'foo')49            os.mkdir(subdir)50            # Make sure that we clean this up when we're done.51            # By using addCleanup this will happen correctly even if we fail52            # later in setUp.53            @self.addCleanup54            def cleanup_dir():55                shutil.rmtree(subdir, ignore_errors=True)56        nb = new_notebook()57        nb.cells.append(new_markdown_cell(u'Created by test Â³'))58        cc1 = new_code_cell(source=u'print(2*6)')59        cc1.outputs.append(new_output(output_type="stream", text=u'12'))60        cc1.outputs.append(new_output(output_type="execute_result",61            data={'image/png' : png_green_pixel},62            execution_count=1,63        ))64        nb.cells.append(cc1)65        with io.open(pjoin(nbdir, 'foo', 'testnb.ipynb'), 'w',66                     encoding='utf-8') as f:67            write(nb, f, version=4)68        self.nbconvert_api = NbconvertAPI(self.request)69    @pytest.mark.skipif(70        not cmd_exists('pandoc'),71        reason="Pandoc wasn't found. Skipping this test."72    )73    def test_from_file(self):74        r = self.nbconvert_api.from_file('html', 'foo', 'testnb.ipynb')75        self.assertEqual(r.status_code, 200)76        self.assertIn(u'text/html', r.headers['Content-Type'])77        self.assertIn(u'Created by test', r.text)78        self.assertIn(u'print', r.text)79        r = self.nbconvert_api.from_file('python', 'foo', 'testnb.ipynb')80        self.assertIn(u'text/x-python', r.headers['Content-Type'])81        self.assertIn(u'print(2*6)', r.text)82    @pytest.mark.skipif(83        not cmd_exists('pandoc'),84        reason="Pandoc wasn't found. Skipping this test."85    )86    def test_from_file_404(self):87        with assert_http_error(404):88            self.nbconvert_api.from_file('html', 'foo', 'thisdoesntexist.ipynb')89    @pytest.mark.skipif(90        not cmd_exists('pandoc'),91        reason="Pandoc wasn't found. Skipping this test."92    )93    def test_from_file_download(self):94        r = self.nbconvert_api.from_file('python', 'foo', 'testnb.ipynb', download=True)95        content_disposition = r.headers['Content-Disposition']96        self.assertIn('attachment', content_disposition)97        self.assertIn('testnb.py', content_disposition)98    @pytest.mark.skipif(99        not cmd_exists('pandoc'),100        reason="Pandoc wasn't found. Skipping this test."101    )102    def test_from_file_zip(self):103        r = self.nbconvert_api.from_file('latex', 'foo', 'testnb.ipynb', download=True)104        self.assertIn(u'application/zip', r.headers['Content-Type'])105        self.assertIn(u'.zip', r.headers['Content-Disposition'])106    @pytest.mark.skipif(107        not cmd_exists('pandoc'),108        reason="Pandoc wasn't found. Skipping this test."109    )110    def test_from_post(self):111        nbmodel = self.request('GET', 'api/contents/foo/testnb.ipynb').json()112        r = self.nbconvert_api.from_post(format='html', nbmodel=nbmodel)113        self.assertEqual(r.status_code, 200)114        self.assertIn(u'text/html', r.headers['Content-Type'])115        self.assertIn(u'Created by test', r.text)116        self.assertIn(u'print', r.text)117        r = self.nbconvert_api.from_post(format='python', nbmodel=nbmodel)118        self.assertIn(u'text/x-python', r.headers['Content-Type'])119        self.assertIn(u'print(2*6)', r.text)120    @pytest.mark.skipif(121        not cmd_exists('pandoc'),122        reason="Pandoc wasn't found. Skipping this test."123    )124    def test_from_post_zip(self):125        nbmodel = self.request('GET', 'api/contents/foo/testnb.ipynb').json()126        r = self.nbconvert_api.from_post(format='latex', nbmodel=nbmodel)127        self.assertIn(u'application/zip', r.headers['Content-Type'])...

generate-pixmaps.py

Source:generate-pixmaps.py

...5import sys6import subprocess7# note: to be launched from where the svg files are8#       this script requires inkscape, imagemagick and makeicns9def cmd_exists(cmd):10	return subprocess.call("type " + cmd, shell=True, 11		stdout=subprocess.PIPE, stderr=subprocess.PIPE) == 012if __name__ == '__main__':13	if not cmd_exists('inkscape'):14		print 'Install Inkscape!'15		sys.exit(1)16	if not cmd_exists('convert'):17		print 'convert not found, Windows icons generation disabled'18	if not cmd_exists('makeicns'):19		print 'makeicns not found, OS X icons generation disabled'20	21	for file in glob.glob('*.svg'):22		23		def convert(target_dir, target_size, add=''):24			source_file = os.path.join(os.getcwd(), file)25			target_file = os.path.join(os.getcwd(), target_dir, os.path.splitext(file)[0] + add + '.png')26			print source_file27			print target_file28			cmd = 'inkscape --export-png={0} --export-width={1} --export-height={1} {2}'29			os.system(cmd.format(target_file, target_size, source_file))30		31		base_source_file = os.path.splitext(file)[0]32		print 'Processing ' + base_source_file33		34		print 'Generating freedesktop files'35		convert('../freedesktop/48x48', '48')36		37		if cmd_exists('convert'):38			print 'Generating Windows ico'39			convert('../windows/', '256', '-256')40			convert('../windows/', '48', '-48')41			os.system('convert ../windows/{0}-48.png ../windows/{0}-256.png ../windows/{0}.ico'.format(base_source_file))42			os.system('rm ../windows/{0}-48.png ../windows/{0}-256.png'.format(base_source_file))43		44		if cmd_exists('makeicns'):45			print 'Generating OS X icns'46			convert('../osx/', '512', '-512')47			convert('../osx/', '256', '-256')48			convert('../osx/', '128', '-128')49			convert('../osx/', '32', '-32')50			convert('../osx/', '16', '-16')51			os.system('makeicns -512 ../osx/{0}-512.png -256 ../osx/{0}-256.png -128 ../osx/{0}-128.png -32 ../osx/{0}-32.png -16 ../osx/{0}-16.png -out ../osx/{0}.icns'.format(base_source_file))...

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