class_docstr: Namespace for string related expressions.
class_docstr_tok: ["Namespace","for","string","related","expressions","."]
code: def __init__(self, expr: Expr):
      self._pyexpr = expr._pyexpr
  
imports: from __future__ import annotations
  import warnings
  from typing import TYPE_CHECKING
  import polars._reexport
  from polars import functions
  from polars.datatypes import Date, Datetime, Int32, Time, py_type_to_dtype
  from polars.exceptions import ChronoFormatWarning
  from polars.utils._parse_expr_input import parse_as_expression
  from polars.utils._wrap import wrap_expr
  from polars.utils.deprecation import deprecate_renamed_function, deprecate_renamed_parameter, rename_use_earliest_to_ambiguous
  from polars.utils.various import find_stacklevel
label_desc: Use image node_id 1 to create a new ExprStringNameSpace object  with example: obj = ExprStringNameSpace(expr)