code: def leading_indent(lines):
      """Remove leading indentation.
  
      If the first line starts with a spaces or tabs, the same whitespace will be
      removed from each following line in the cell.
      """
      if not lines:
          return lines
      m = _indent_re.match(lines[0])
      if not m:
          return lines
      space = m.group(0)
      n = len(space)
      return [l[n:] if l.startswith(space) else l for l in lines]
  
imports: import ast
  from codeop import CommandCompiler, Compile
  import re
  import sys
  import tokenize
  from typing import List, Tuple, Optional, Any
  import warnings
  from IPython.utils import tokenutil
label_desc: Use image node_id 2 for calling a global function with example usage: leading_indent(lines) and returns: unknown, lines, lines