Move is_exec_found(..) to dvc/dagascii.py

dvc/dagascii.py

@@ -16,7 +16,6 @@ from grandalf.routing import EdgeViewer
 from grandalf.routing import route_with_lines
 
 from dvc.env import DVC_PAGER
-from dvc.utils import is_exec_found
 
 
 logger = logging.getLogger(__name__)
@@ -32,7 +31,7 @@ def find_pager():
     if not sys.stdout.isatty():
         return pydoc.plainpager
 
-    if is_exec_found(DEFAULT_PAGER):
+    if os.system("({}) 2>{}".format(DEFAULT_PAGER, os.devnull)) == 0:
         pager_cmd = os.getenv(DVC_PAGER, DEFAULT_PAGER_FORMATTED)
 
         def less_pager(text):

dvc/utils/__init__.py

@@ -420,8 +420,3 @@ def resolve_output(inp, out):
     if os.path.isdir(out):
         return os.path.join(out, name)
     return out
-
-
-def is_exec_found(exec_name):
-    cmd = "({}) 2>{}".format(exec_name, os.devnull)
-    return os.system(cmd) == 0

tests/func/test_utils.py

@@ -88,13 +88,3 @@ def test_makedirs_permissions(tmpdir):
 
     assert stat.S_IMODE(os.stat(test_dir).st_mode) == dir_mode
     assert stat.S_IMODE(os.stat(intermediate_dir).st_mode) == dir_mode
-
-
-def test_is_exec_found_returns_true_when_program_exists():
-    result = utils.is_exec_found("echo")
-    assert result is True
-
-
-def test_is_exec_found_returns_false_when_program_is_missing():
-    result = utils.is_exec_found("some-missing-program")
-    assert result is False