added function to find project root

linter.py

@@ -1,10 +1,51 @@
 import logging
 import re
+import os
+from itertools import chain, takewhile
 from SublimeLinter.lint import PythonLinter
 
 
 logger = logging.getLogger('SublimeLinter.plugins.pylint')
 
+HOME = os.path.expanduser('~')
+
+
+def paths_upwards(path):
+    while True:
+        yield path
+
+        next_path = os.path.dirname(path)
+        # Stop just before root in *nix systems
+        if next_path == '/':
+            return
+
+        if next_path == path:
+            return
+
+        path = next_path
+
+
+def paths_upwards_until_home(path):
+    return chain(takewhile(lambda p: p != HOME, paths_upwards(path)), [HOME])
+
+
+def find_project_root(src):
+    """Attempt to get the project root."""
+    for src in paths_upwards_until_home(src):
+        if os.path.exists(os.path.join(src, ".pylintrc")):
+            return src
+
+        if os.path.exists(os.path.join(src, "pyproject.toml")):
+            return src
+
+        if os.path.exists(os.path.join(src, ".git")):
+            return src
+
+        if os.path.exists(os.path.join(src, ".hg")):
+            return src
+
+    return src
+
 
 class Pylint(PythonLinter):
     regex = (
@@ -44,6 +85,8 @@ def cmd(self):
                 ]
                 settings['init-hook'] = commands
 
+        self.context['project_root'] = find_project_root(self.view.file_name())
+
         return (
             'pylint',
             '--msg-template=\'{line}:{column}:{msg_id}: {msg} ({symbol})\'',