montepy.universe module#

Classes:

Universe(number)

Class to represent an MCNP universe, but not handle the input directly.
class montepy.universe.Universe(number: int)#

Bases: Numbered_MCNP_Object

Class to represent an MCNP universe, but not handle the input directly.

Parameters:

number (int) – The number for the universe, must be ≥ 0

Methods:

claim(cells)

Take the given cells and move them into this universe, and out of their original universe.

clone([starting_number, step])

Create a new independent instance of this object with a new number.

format_for_mcnp_input(mcnp_version)

Creates a list of strings representing this MCNP_Object that can be written to file.

link_to_problem(problem)

Links the input to the parent problem for this input.

mcnp_str([mcnp_version])

Returns a string of this input as it would appear in an MCNP input file.

validate()

Validates that the object is in a usable state.

wrap_string_for_mcnp(string, mcnp_version, ...)

Wraps the list of the words to be a well formed MCNP input.

Attributes:

cells

A generator of the cell objects in this universe.

comments

The comments associated with this input if any.

filled_cells

A generator of the cells that use this universe.

leading_comments

Any comments that come before the beginning of the input proper.

number

The current number of the object that will be written out to a new input.

old_number

Original universe number from the input file.

parameters

A dictionary of the additional parameters for the object.

trailing_comment

The trailing comments and padding of an input.
static wrap_string_for_mcnp(string, mcnp_version, is_first_line, suppress_blank_end=True) → list[str]#

Wraps the list of the words to be a well formed MCNP input.

multi-line inputs will be handled by using the indentation format, and not the “&” method.

Parameters:

  • string (str) – A long string with new lines in it, that needs to be chunked appropriately for MCNP inputs

  • mcnp_version (tuple) – the tuple for the MCNP that must be formatted for.

  • is_first_line (bool) – If true this will be the beginning of an MCNP input. The first line will not be indented.

  • suppress_blank_end (bool) – Whether or not to suppress any blank lines that would be added to the end. Good for anywhere but cell modifiers in the cell block.

Returns:

A list of strings that can be written to an input file, one item to a line.

Return type:

list

claim(cells)#

Take the given cells and move them into this universe, and out of their original universe.

Can be given a single Cell, a list of cells, or a Cells object.

Parameters:

cells (Cell, list, or Cells) – the cell(s) to be claimed

Raises:

TypeError – if bad parameter is given.

clone(starting_number=None, step=None)#

Create a new independent instance of this object with a new number.

This relies mostly on copy.deepcopy.

Notes

If starting_number, or step are not specified starting_number(), and step() are used as default values, if this object is tied to a problem. For instance a Material will use problem.materials default information. Otherwise 1 will be used as default values

Added in version 0.5.0.

Parameters:

  • starting_number (int) – The starting number to request for a new object number.

  • step (int) – the step size to use to find a new valid number.

Returns:

a cloned copy of this object.

Return type:

type(self)

format_for_mcnp_input(mcnp_version: tuple[int]) → list[str]#

Creates a list of strings representing this MCNP_Object that can be written to file.

Parameters:

mcnp_version (tuple[int]) – The tuple for the MCNP version that must be exported to.

Returns:

a list of strings for the lines that this input will occupy.

Return type:

list

Links the input to the parent problem for this input.

This is done so that inputs can find links to other objects.

Parameters:

problem (MCNP_Problem) – The problem to link this input to.

mcnp_str(mcnp_version: tuple[int] = None)#

Returns a string of this input as it would appear in an MCNP input file.

..versionadded:: 1.0.0

Parameters:

mcnp_version (tuple[int]) – The tuple for the MCNP version that must be exported to.

Returns:

The string that would have been printed in a file

Return type:

str

validate()#

Validates that the object is in a usable state.

property cells: Generator[Cell, None, None]#

A generator of the cell objects in this universe.

Returns:

a generator returning every cell in this universe.

Return type:

Generator

property comments: list[PaddingNode]#

The comments associated with this input if any.

This includes all C comments before this card that aren’t part of another card, and any comments that are inside this card.

Returns:

a list of the comments associated with this comment.

Return type:

list

property filled_cells: Generator[Cell, None, None]#

A generator of the cells that use this universe.

Returns:

an iterator of the Cell objects which use this universe as their fill.

Return type:

Generator[Cell]

property leading_comments: list[PaddingNode]#

Any comments that come before the beginning of the input proper.

Returns:

the leading comments.

Return type:

list

property number#

The current number of the object that will be written out to a new input.

Return type:

int

property old_number#

Original universe number from the input file.

property parameters: dict[str, str]#

A dictionary of the additional parameters for the object.

e.g.: 1 0 -1 u=1 imp:n=0.5 has the parameters {"U": "1", "IMP:N": "0.5"}

Returns:

a dictionary of the key-value pairs of the parameters.

Return type:

unknown

Rytpe:

dict

property trailing_comment: list[PaddingNode]#

The trailing comments and padding of an input.

Generally this will be blank as these will be moved to be a leading comment for the next input.

Returns:

the trailing c style comments and intermixed padding (e.g., new lines)

Return type:

list