diff --git a/src/dragonglass/__init__.py b/src/dragonglass/__init__.py
index 3351988..f690a02 100644
--- a/src/dragonglass/__init__.py
+++ b/src/dragonglass/__init__.py
@@ -1 +1 @@
-from .dragonglass import main
+from .dragonglass import main as main
diff --git a/src/dragonglass/dragonglass.py b/src/dragonglass/dragonglass.py
index 2e65dbe..5f2cf90 100644
--- a/src/dragonglass/dragonglass.py
+++ b/src/dragonglass/dragonglass.py
@@ -1,7 +1,6 @@
 #!/usr/bin/env python3
 
 import argparse
-import sys
 import yaml
 from pathlib import Path
 from tree import SourceNode, SourceIndex
diff --git a/src/dragonglass/tree.py b/src/dragonglass/tree.py
index aae5a2c..f36f001 100644
--- a/src/dragonglass/tree.py
+++ b/src/dragonglass/tree.py
@@ -50,13 +50,13 @@ class SourceNode:
     def load_metadata(self, source_dir):
         if self._is_md and not self._is_dir:
             with open(source_dir / self._path, "r", encoding="utf-8") as f:
-                l = f.readline()
-                if l == '---\n':
+                cur_line = f.readline()
+                if cur_line == '---\n':
                     metalines = []
-                    l = f.readline()
-                    while l != '---\n':
-                        metalines.append(l)
-                        l = f.readline()
+                    cur_line = f.readline()
+                    while cur_line != '---\n':
+                        metalines.append(cur_line)
+                        cur_line = f.readline()
                     self.metadata = yaml.full_load(''.join(metalines))
 
     def parse_markdown(self, source_dir, markdown_parser):