本文整理汇总了Python中mrjob.fs.hadoop.HadoopFilesystem.exists方法的典型用法代码示例。如果您正苦于以下问题：Python HadoopFilesystem.exists方法的具体用法？Python HadoopFilesystem.exists怎么用？Python HadoopFilesystem.exists使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类mrjob.fs.hadoop.HadoopFilesystem的用法示例。
在下文中一共展示了HadoopFilesystem.exists方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: HadoopFSTestCase
# 需要导入模块: from mrjob.fs.hadoop import HadoopFilesystem [as 别名]
# 或者: from mrjob.fs.hadoop.HadoopFilesystem import exists [as 别名]
#.........这里部分代码省略.........
def test_ls_basic_2(self):
self.make_mock_file('f')
self.make_mock_file('f2')
self.assertEqual(sorted(self.fs.ls('hdfs:///')),
['hdfs:///f', 'hdfs:///f2'])
def test_ls_recurse(self):
self.make_mock_file('f')
self.make_mock_file('d/f2')
self.assertEqual(sorted(self.fs.ls('hdfs:///')),
['hdfs:///d/f2', 'hdfs:///f'])
def test_ls_s3n(self):
# hadoop fs -lsr doesn't have user and group info when reading from s3
self.make_mock_file('f', 'foo')
self.make_mock_file('f3 win', 'foo' * 10)
self.assertEqual(sorted(self.fs.ls('s3n://bucket/')),
['s3n://bucket/f', 's3n://bucket/f3 win'])
def test_ls_s3a(self):
# hadoop fs -lsr doesn't have user and group info when reading from s3
self.make_mock_file('f', 'foo')
self.make_mock_file('f3 win', 'foo' * 10)
self.assertEqual(sorted(self.fs.ls('s3a://bucket/')),
['s3a://bucket/f', 's3a://bucket/f3 win'])
def test_single_space(self):
self.make_mock_file('foo bar')
self.assertEqual(sorted(self.fs.ls('hdfs:///')),
['hdfs:///foo bar'])
def test_double_space(self):
self.make_mock_file('foo bar')
self.assertEqual(sorted(self.fs.ls('hdfs:///')),
['hdfs:///foo bar'])
def test_du(self):
self.make_mock_file('data1', 'abcd')
self.make_mock_file('more/data2', 'defg')
self.make_mock_file('more/data3', 'hijk')
self.assertEqual(self.fs.du('hdfs:///'), 12)
self.assertEqual(self.fs.du('hdfs:///data1'), 4)
self.assertEqual(self.fs.du('hdfs:///more'), 8)
self.assertEqual(self.fs.du('hdfs:///more/*'), 8)
self.assertEqual(self.fs.du('hdfs:///more/data2'), 4)
self.assertEqual(self.fs.du('hdfs:///more/data3'), 4)
def test_du_non_existent(self):
self.assertEqual(self.fs.du('hdfs:///does-not-exist'), 0)
def test_exists_no(self):
path = 'hdfs:///f'
self.assertEqual(self.fs.exists(path), False)
def test_exists_yes(self):
self.make_mock_file('f')
path = 'hdfs:///f'
self.assertEqual(self.fs.exists(path), True)
def test_mkdir(self):
self.fs.mkdir('hdfs:///d/ave')
path_in_mock_hdfs = os.path.join(
get_mock_hdfs_root(self.env), 'd', 'ave')
self.assertEqual(os.path.isdir(path_in_mock_hdfs), True)
def test_put(self):
local_path = self.makefile('foo', contents=b'bar')
dest = 'hdfs:///bar'
self.fs.put(local_path, dest)
self.assertEqual(b''.join(self.fs.cat(dest)), b'bar')
def test_no_put_to_dir(self):
local_path = self.makefile('foo', contents=b'bar')
self.assertRaises(ValueError, self.fs.put, local_path, 'hdfs:///')
def test_rm(self):
path_in_mock_hdfs = self.make_mock_file('f')
self.assertEqual(os.path.exists(path_in_mock_hdfs), True)
self.fs.rm('hdfs:///f')
self.assertEqual(os.path.exists(path_in_mock_hdfs), False)
def test_rm_recursive(self):
path_in_mock_hdfs = self.make_mock_file('foo/bar')
self.assertEqual(os.path.exists(path_in_mock_hdfs), True)
self.fs.rm('hdfs:///foo') # remove containing directory
self.assertEqual(os.path.exists(path_in_mock_hdfs), False)
def test_rm_nonexistent(self):
self.fs.rm('hdfs:///baz')
def test_touchz(self):
self.assertEqual(list(self.fs.ls('hdfs:///')), [])
self.fs.touchz('hdfs:///empty')
self.assertEqual(list(self.fs.ls('hdfs:///')),
['hdfs:///empty'])