peal.global_utils.embed_numberstring¶

peal.global_utils.embed_numberstring(number_str, num_digits=7)[source]¶

Left-pad a number with zeros so that filenames sort lexicographically.

Parameters:

number_str (int or str) – The number to pad.
num_digits (int, optional) – Target width; longer inputs are returned unchanged.

Returns:

The zero-padded number, e.g. "0000042".

Return type:

str