class_docstr: Namespace for string related expressions.
class_docstr_tok: ["Namespace","for","string","related","expressions","."]
docstr: Return the string left justified in a string of length `length`.
  
  .. deprecated:: 0.19.12
      This method has been renamed to :func:`pad_end`.
  
  Parameters
  ----------
  length
      Justify left to this length.
  fill_char
      Fill with this ASCII character.
docstr_tok: ["Return","the","string","left","justified","in","a","string","of","length","`","length","`",".","..","deprecated",":",":","0.19.12","This","method","has","been","renamed","to",":","func",":","`","pad_end","`",".","Parameters","--","--","--","--","--","length","Justify","left","to","this","length",".","fill_char","Fill","with","this","ASCII","character","."]
code: def ljust(self, length: int, fill_char: str = " ") -> Expr:
      """
      Return the string left justified in a string of length `length`.
  
      .. deprecated:: 0.19.12
          This method has been renamed to :func:`pad_end`.
  
      Parameters
      ----------
      length
          Justify left to this length.
      fill_char
          Fill with this ASCII character.
  
      """
      return self.pad_end(length, fill_char)
  
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 48 for calling the ExprStringNameSpace obj's underlying member method code with example usage: obj.ljust(length, fill_char) and returns: self