diff --git a/loglens/formatters/table_formatter.py b/loglens/formatters/table_formatter.py
index 2ac4cab..70097d8 100644
--- a/loglens/formatters/table_formatter.py
+++ b/loglens/formatters/table_formatter.py
@@ -1,21 +1,20 @@
-"""Table formatter using Rich library."""
+'''Table formatter using Rich library.'''
 
-from datetime import datetime
-from typing import Any, Dict, List, Optional
+from typing import Any, Optional
+
+from rich import box
 from rich.console import Console
+from rich.style import Style
 from rich.table import Table
 from rich.text import Text
-from rich import box
-from rich.style import Style
 
 from loglens.analyzers.analyzer import AnalysisResult
-from loglens.analyzers.severity import SeverityLevel
-from loglens.parsers.base import ParsedLogEntry
 from loglens.formatters.base import OutputFormatter
+from loglens.parsers.base import ParsedLogEntry
 
 
 class TableFormatter(OutputFormatter):
-    """Formats output as rich tables."""
+    '''Formats output as rich tables.'''
 
     SEVERITY_STYLES = {
         "critical": Style(color="red", bold=True),
@@ -26,15 +25,19 @@ class TableFormatter(OutputFormatter):
         "unknown": Style(color="white"),
     }
 
-    def __init__(self, console: Console = None, show_timestamps: bool = True,
-                 max_entries: int = 100):
+    def __init__(
+        self,
+        console: Optional[Console] = None,
+        show_timestamps: bool = True,
+        max_entries: int = 100,
+    ):
         super().__init__()
         self.console = console or Console()
         self.show_timestamps = show_timestamps
         self.max_entries = max_entries
 
     def format(self, data: Any) -> str:
-        """Format data as table."""
+        '''Format data as table.'''
         if isinstance(data, AnalysisResult):
             return self._format_analysis_result(data)
         elif isinstance(data, list):
@@ -43,9 +46,7 @@ class TableFormatter(OutputFormatter):
             return str(data)
 
     def _format_analysis_result(self, result: AnalysisResult) -> str:
-        """Format analysis result as summary table."""
-        output = []
-
+        '''Format analysis result as summary table.'''
         summary_table = Table(title="Log Analysis Summary", box=box.ROUNDED)
         summary_table.add_column("Metric", style="cyan")
         summary_table.add_column("Value", style="magenta")
@@ -69,11 +70,7 @@ class TableFormatter(OutputFormatter):
         for level in ["critical", "error", "warning", "info", "debug"]:
             count = getattr(result, f"{level}_count", 0)
             pct = (count / total) * 100
-            severity_table.add_row(
-                level.upper(),
-                str(count),
-                f"{pct:.1f}%"
-            )
+            severity_table.add_row(level.upper(), str(count), f"{pct:.1f}%")
 
         self.console.print(severity_table)
 
@@ -98,8 +95,8 @@ class TableFormatter(OutputFormatter):
 
         return ""
 
-    def _format_entries(self, entries: List[ParsedLogEntry]) -> str:
-        """Format log entries as table."""
+    def _format_entries(self, entries: list[ParsedLogEntry]) -> str:
+        '''Format log entries as table.'''
         table = Table(title="Log Entries", box=box.ROUNDED)
         table.add_column("#", justify="right", style="dim")
         if self.show_timestamps:
@@ -107,7 +104,7 @@ class TableFormatter(OutputFormatter):
         table.add_column("Severity", style="bold")
         table.add_column("Message", overflow="fold")
 
-        displayed = entries[:self.max_entries]
+        displayed = entries[: self.max_entries]
         for entry in displayed:
             row = [str(entry.line_number)]
 
@@ -125,25 +122,21 @@ class TableFormatter(OutputFormatter):
             table.add_row(*row)
 
         if len(entries) > self.max_entries:
-            table.add_row(
-                f"... and {len(entries) - self.max_entries} more",
-                "", "", ""
-            )
+            table.add_row(f"... and {len(entries) - self.max_entries} more", "", "", "")
 
         self.console.print(table)
         return ""
 
-    def format_entries_detailed(self, entries: List[ParsedLogEntry]) -> str:
-        """Format entries with full details."""
-        for entry in entries[:self.max_entries]:
+    def format_entries_detailed(self, entries: list[ParsedLogEntry]) -> str:
+        '''Format entries with full details.'''
+        for entry in entries[: self.max_entries]:
             self._print_entry_detailed(entry)
 
         return ""
 
     def _print_entry_detailed(self, entry: ParsedLogEntry) -> None:
-        """Print a single entry with full details."""
+        '''Print a single entry with full details.'''
         from rich.panel import Panel
-        from rich.columns import Columns
 
         severity = entry.severity or "unknown"
         style = self.SEVERITY_STYLES.get(severity, self.SEVERITY_STYLES["unknown"])
@@ -174,10 +167,7 @@ class TableFormatter(OutputFormatter):
                 content.append(f"  {key}: {value}")
 
         panel = Panel(
-            "\n".join(content),
-            title=f"Entry #{entry.line_number}",
-            style=style,
-            box=box.SIMPLE
+            "\n".join(content), title=f"Entry #{entry.line_number}", style=style, box=box.SIMPLE
         )
 
         self.console.print(panel)