vals.fmt_bytes

vals.fmt_bytes(x, standard='decimal', decimals=1, n_sigfig=None, drop_trailing_zeros=True, drop_trailing_dec_mark=True, use_seps=True, pattern='{x}', sep_mark=',', dec_mark='.', force_sign=False, incl_space=True, locale=None)

Format values as bytes.

With numeric values in a list, we can transform those to values of bytes with human readable units. The val_fmt_bytes() function allows for the formatting of byte sizes to either of two common representations: (1) with decimal units (powers of 1000, examples being "kB" and "MB"), and (2) with binary units (powers of 1024, examples being "KiB" and "MiB"). It is assumed the input numeric values represent the number of bytes and automatic truncation of values will occur. The numeric values will be scaled to be in the range of 1 to <1000 and then decorated with the correct unit symbol according to the standard chosen. For more control over the formatting of byte sizes, we can use the following options:

• decimals: choice of the number of decimal places, option to drop trailing zeros, and a choice of the decimal symbol
• digit grouping separators: options to enable/disable digit separators and provide a choice of separator symbol
• pattern: option to use a text pattern for decoration of the formatted values
• locale-based formatting: providing a locale ID will result in number formatting specific to the chosen locale

Parameters

Name	Type	Description	Default
x	X	A list of values to be formatted.	required
standard	str	The form of expressing large byte sizes is divided between: (1) decimal units (powers of 1000; e.g., "kB" and "MB"), and (2) binary units (powers of 1024; e.g., "KiB" and "MiB"). The default is to use decimal units with the "decimal" option. The alternative is to use binary units with the "binary" option.	'decimal'
decimals	int	This corresponds to the exact number of decimal places to use. A value such as 2.34 can, for example, be formatted with 0 decimal places and it would result in "2". With 4 decimal places, the formatted value becomes "2.3400". The trailing zeros can be removed with drop_trailing_zeros=True.	1
drop_trailing_zeros	bool	A boolean value that allows for removal of trailing zeros (those redundant zeros after the decimal mark).	True
drop_trailing_dec_mark	bool	A boolean value that determines whether decimal marks should always appear even if there are no decimal digits to display after formatting (e.g., 23 becomes 23. if False). By default trailing decimal marks are not shown.	True
use_seps	bool	The use_seps option allows for the use of digit group separators. The type of digit group separator is set by sep_mark and overridden if a locale ID is provided to locale. This setting is True by default.	True
pattern	str	A formatting pattern that allows for decoration of the formatted value. The formatted value is represented by the {x} (which can be used multiple times, if needed) and all other characters will be interpreted as string literals.	'{x}'
sep_mark	str	The string to use as a separator between groups of digits. For example, using sep_mark="," with a value of 1000 would result in a formatted value of "1,000". This argument is ignored if a locale is supplied (i.e., is not None).	','
dec_mark	str	The string to be used as the decimal mark. For example, using dec_mark="," with the value 0.152 would result in a formatted value of "0,152"). This argument is ignored if a locale is supplied (i.e., is not None).	'.'
force_sign	bool	Should the positive sign be shown for positive values (effectively showing a sign for all values except zero)? If so, use True for this option. The default is False, where only negative numbers will display a minus sign.	False
incl_space	bool	An option for whether to include a space between the value and the currency symbol. The default is to not introduce a space character.	True
locale	str | None	An optional locale identifier that can be used for formatting values according the locale’s rules. Examples include "en" for English (United States) and "fr" for French (France).	None

Returns

Type	Description
list[str]	A list of formatted values is returned.