Color

class lsst.pex.config.history.Color(text, category)

Bases: object

A controller that determines whether strings should be colored.

Parameters:

text : str

Text content to print to a terminal.

category : str

Semantic category of the text. See categories for possible values.

Raises:

RuntimeError

Raised when the category is not a key of Color.categories.

Notes

The usual usage is Color(string, category) which returns a string that may be printed; categories are given by the keys of Color.categories.

Color.colorize may be used to set or retrieve whether the user wants color. It always returns False when sys.stdout is not attached to a terminal.

Attributes Summary

categories	Mapping of semantic labels to color names (dict).
colors	Mapping of color names to terminal color codes (dict).

Methods Summary

colorize([val])

Get or set whether the string should be colorized.

Attributes Documentation

categories = {'FILE': 'green', 'FUNCTION_NAME': 'blue', 'NAME': 'blue', 'TEXT': 'red', 'VALUE': 'yellow'}

Mapping of semantic labels to color names (dict).

Notes

The default categories are:

• 'NAME'
• 'VALUE'
• 'FILE'
• 'TEXT'
• 'FUNCTION_NAME'

colors = {'black': 0, 'blue': 4, 'cyan': 6, 'green': 2, 'magenta': 5, 'red': 1, 'white': 7, 'yellow': 3}

Mapping of color names to terminal color codes (dict).

Methods Documentation

static colorize(val=None)

Get or set whether the string should be colorized.

Parameters:

val : bool or dict, optional

The value is usually a bool, but it may be a dict which is used to modify Color.categories

Returns:

shouldColorize : bool

If True, the string should be colorized. A string will not be colorized if standard output or standard error are not attached to a terminal or if the val argument was False.

Only strings written to a terminal are colorized.