mici.progressbars module

Progress bar classes for tracking progress of chains.

class mici.progressbars.DummyProgressBar(sequence, description, position=(0, 1))

Bases: ProgressBar

Placeholder progress bar which does not display progress updates.

Parameters:

• sequence (Collection) – Sequence to iterate over. Must be iterable _and_ have a defined length such that len(sequence) is valid.

• description (Optional[str]) – Description of task to prefix progress bar with.

• position (tuple[int, int]) – Tuple specifying position of progress bar within a sequence with first entry corresponding to zero-indexed position and the second entry the total number of progress bars.

property n_iter: int

property sequence: Collection

Sequence iterated over.

update(iter_count, iter_dict, *, refresh=True)

Update progress bar state.

Parameters:

• iter_count (int) – New value for iteration counter.

• iter_dict (Optional[dict[str, float]]) – Dictionary of iteration statistics key-value pairs to use to update postfix stats.

• refresh (bool) – Whether to refresh display(s).

class mici.progressbars.FileDisplay(position=(0, 1), file=None)

Bases: object

Use file which supports ANSI escape sequences as an updatable display.

Parameters:

• position (tuple[int, int]) – Tuple specifying position of display line within a sequence lines with first entry corresponding to zero-indexed line and the second entry the total number of lines.

• file (Optional[TextIO]) – File object to write updates to. Must support ANSI escape sequences x1b[A} (cursor up) and \x1b[B (cursor down) for manipulating write position. Defaults to sys.stdout if None.

CURSOR_DOWN = '\x1b[B'

ANSI escape sequence to move cursor down one line.

CURSOR_UP = '\x1b[A'

ANSI escape sequence to move cursor up one line.

update(obj)

Update display with string representation of object.

Parameters:

obj – Object to display.

class mici.progressbars.LabelledSequenceProgressBar(labelled_sequence, description=None, position=(0, 1), displays=None)

Bases: ProgressBar

Iterable object for tracking progress of a sequence of labelled tasks.

Parameters:

• labelled_sequence (dict[str, Any]) – Ordered dictionary with string keys corresponding to labels for stages represented by sequence and values the entries in the sequence being iterated over.

• description (Optional[str]) – Description of task to prefix progress bar with.

• position (tuple[int, int]) – Tuple specifying position of progress bar within a sequence with first entry corresponding to zero-indexed position and the second entry the total number of progress bars.

• displays (Optional[Collection]) – List of objects to use to display visual representation(s) of progress bar. Each object much have an update method which will be passed a single argument corresponding to the current progress bar.

property completed_labels: list[str]

Labels corresponding to completed iterations.

property counter: int

Progress iteration count.

property current_label: str

Label corresponding to current iteration.

property description: str

Description of task being tracked.

property n_iter: int

property postfix: str

Text to postfix progress bar with.

property prefix: str

Text to prefix progress bar with.

property progress_bar: str

Progress bar string.

refresh()

Refresh visual display(s) of status bar.

reset()

Reset progress bar state.

property sequence: Collection

Sequence iterated over.

property stats: str

Comma-delimited string list of statistic key=value pairs.

property unstarted_labels: list[str]

Labels corresponding to unstarted iterations.

update(iter_count, iter_dict=None, *, refresh=True)

Update progress bar state.

Parameters:

• iter_count (int) – New value for iteration counter.

• iter_dict (Optional[dict[str, float]]) – Dictionary of iteration statistics key-value pairs to use to update postfix stats.

• refresh (bool) – Whether to refresh display(s).

class mici.progressbars.ProgressBar(sequence, description, position=(0, 1))

Bases: ABC

Base class defining expected interface for progress bars.

Parameters:

• sequence (Collection) – Sequence to iterate over. Must be iterable _and_ have a defined length such that len(sequence) is valid.

• description (Optional[str]) – Description of task to prefix progress bar with.

• position (tuple[int, int]) – Tuple specifying position of progress bar within a sequence with first entry corresponding to zero-indexed position and the second entry the total number of progress bars.

property n_iter: int

property sequence: Collection

Sequence iterated over.

abstract update(iter_count, iter_dict, *, refresh=True)

Update progress bar state.

Parameters:

• iter_count (int) – New value for iteration counter.

• iter_dict (Optional[dict[str, float]]) – Dictionary of iteration statistics key-value pairs to use to update postfix stats.

• refresh (bool) – Whether to refresh display(s).

class mici.progressbars.SequenceProgressBar(sequence, description=None, position=(0, 1), displays=None, n_col=10, unit='it', min_refresh_time=0.25)

Bases: ProgressBar

Iterable object for tracking progress of an iterative task.

Implements both string and HTML representations to allow richer display in interfaces which support HTML output, for example Jupyter notebooks or interactive terminals.

Parameters:

• sequence (Collection) – Sequence to iterate over. Must be iterable and have a defined length such that len(sequence) is valid.

• description (Optional[str]) – Description of task to prefix progress bar with.

• position (tuple[int, int]) – Tuple specifying position of progress bar within a sequence with first entry corresponding to zero-indexed position and the second entry the total number of progress bars.

• displays (Optional[Collection]) – List of objects to use to display visual representation(s) of progress bar. Each object much have an update method which will be passed a single argument corresponding to the current progress bar.

• n_col (int) – Number of columns (characters) to use in string representation of progress bar.

• unit (str) – String describing unit of per-iteration tasks.

• min_referesh_time – Minimum time in seconds between each refresh of progress bar visual representation.

• min_refresh_time (float) –

GLYPHS = ' ▏▎▍▌▋▊▉█'

Characters used to create string representation of progress bar.

property bar_color: str

CSS color property for HTML progress bar.

property counter: int

Progress iteration count.

property description: str

Description of task being tracked.

property elapsed_time: str

Elapsed time formatted as string.

property empty_blocks: str

Empty blocks string.

property est_remaining_time: str

Estimated remaining time to completion formatted as string.

property filled_blocks: str

Filled blocks string.

property iter_rate: str

Mean iteration rate if ≥ 1 it/s or reciprocal s/it as string.

property n_block_empty: int

Number of empty blocks in progress bar.

property n_block_filled: int

Number of filled blocks in progress bar.

property n_iter: int

property partial_block: str

Partial block character.

property perc_complete: str

Percentage complete formatted as string.

property postfix: str

Text to postfix progress bar with.

property prefix: str

Text to prefix progress bar with.

property progress_bar: str

Progress bar string.

property prop_complete: float

Proportion complete (float value in [0, 1]).

property prop_partial_block: float

Proportion filled in partial block in progress bar.

refresh()

Refresh visual display(s) of progress bar.

reset()

Reset progress bar state.

property sequence: Collection

Sequence iterated over.

property stats: str

Comma-delimited string list of statistic key=value pairs.

update(iter_count, iter_dict=None, *, refresh=True)

Update progress bar state.

Parameters:

• iter_count (int) – New value for iteration counter.

• iter_dict (Optional[dict[str, float]]) – Dictionary of iteration statistics key-value pairs to use to update postfix stats.

• refresh (bool) – Whether to refresh display(s).