Restored 'delimiter' to FixedWidthReader for 'colspecs=infer'.

Signed-off-by: Ronald Barnes <[email protected]>

Author: RonaldBarnes

pandas/io/parsers/python_parser.py

@@ -1186,6 +1186,7 @@ def __init__(
     ) -> None:
         self.f = f
         self.buffer: Iterator | None = None
+        self.delimiter = delimiter
         self.keep_whitespace = keep_whitespace
         self.whitespace_chars = whitespace_chars
         self.comment = comment