class_docstr: A symbolic input needed to compute the outputs is missing.
class_docstr_tok: ["A","symbolic","input","needed","to","compute","the","outputs","is","missing","."]
code: def __init__(self, *args, **kwargs):
      if kwargs:
          # The call to list is needed for Python 3
          assert list(kwargs.keys()) == ["variable"]
          error_msg = get_variable_trace_string(kwargs["variable"])
          if error_msg:
              args = args + (error_msg,)
      s = "\n".join(args)  # Needed to have the new line print correctly
      super().__init__(s)
  
imports: import linecache
  import sys
  import traceback
  from abc import ABCMeta
  from collections.abc import Sequence
  from io import StringIO
  from typing import TYPE_CHECKING, Any, Optional, TypeVar, Union
label_desc: Use image node_id 1 to create a new MissingInputError object from inherited base classes: Exception with example: obj = MissingInputError()