TYP: fix mypy ignored error

Author: ivanovmg

pandas/io/formats/latex.py

@@ -2,7 +2,7 @@
 Module for formatting output data in Latex.
 """
 from abc import ABC, abstractmethod
-from typing import Iterator, List, Optional, Tuple, Type, Union
+from typing import Iterator, List, Optional, Sequence, Tuple, Type, Union
 
 import numpy as np
 
@@ -73,10 +73,8 @@ def __init__(
         self.multicolumn_format = multicolumn_format
         self.multirow = multirow
         self.clinebuf: List[List[int]] = []
-        self.strcols = self._get_strcols()
-        self.strrows: List[List[str]] = list(
-            zip(*self.strcols)  # type: ignore[arg-type]
-        )
+        self.strcols: Sequence[Sequence[str]] = self._get_strcols()
+        self.strrows: Sequence[Sequence[str]] = list(zip(*self.strcols))
 
     def get_strrow(self, row_num: int) -> str:
         """Get string representation of the row."""
@@ -131,7 +129,7 @@ def header_levels(self) -> int:
             nlevels += 1
         return nlevels
 
-    def _get_strcols(self) -> List[List[str]]:
+    def _get_strcols(self) -> Sequence[Sequence[str]]:
         """String representation of the columns."""
         if self.fmt.frame.empty:
             strcols = [[self._empty_info_line]]
@@ -179,7 +177,7 @@ def _empty_info_line(self):
             f"Index: {self.frame.index}"
         )
 
-    def _preprocess_row(self, row: List[str]) -> List[str]:
+    def _preprocess_row(self, row: Sequence[str]) -> List[str]:
         """Preprocess elements of the row."""
         if self.fmt.escape:
             crow = _escape_symbols(row)
@@ -781,7 +779,7 @@ def _get_index_format(self) -> str:
         return "l" * self.frame.index.nlevels if self.fmt.index else ""
 
 
-def _escape_symbols(row: List[str]) -> List[str]:
+def _escape_symbols(row: Sequence[str]) -> List[str]:
     """Carry out string replacements for special symbols.
 
     Parameters
@@ -813,7 +811,7 @@ def _escape_symbols(row: List[str]) -> List[str]:
     ]
 
 
-def _convert_to_bold(crow: List[str], ilevels: int) -> List[str]:
+def _convert_to_bold(crow: Sequence[str], ilevels: int) -> List[str]:
     """Convert elements in ``crow`` to bold."""
     return [
         f"\\textbf{{{x}}}" if j < ilevels and x.strip() not in ["", "{}"] else x