code: def unsafe(f):
      """Marks a function or method as unsafe.
  
      ::
  
          @unsafe
          def delete(self):
              pass
      """
      f.unsafe_callable = True
      return f
  
imports: import operator
  import types
  import warnings
  from collections import deque
  from string import Formatter
  from markupsafe import EscapeFormatter
  from markupsafe import Markup
  from ._compat import abc
  from ._compat import PY2
  from ._compat import range_type
  from ._compat import string_types
  from .environment import Environment
  from .exceptions import SecurityError
label_desc: Use image node_id 3 for calling a global function with example usage: unsafe(f) and returns: f