Coverage for install/scipp/utils/to_string.py: 77%

1# SPDX-License-Identifier: BSD-3-Clause 

2# Copyright (c) 2023 Scipp contributors (https://github.com/scipp) 

3# @file 

4# @author Neil Vaytet 

5from typing import Any 

6 

7 

8def value_to_string(val: Any, precision: int = 3, max_str_len: int = 80) -> str: 

9 """ 

10 Convert a number to a human-readable string. 

11 """ 

12 if (not isinstance(val, float)) or (val == 0): 

13 raw_text = str(val) 

14 if len(raw_text) > max_str_len: 

15 text = f"{raw_text[:max_str_len-3]}..." 

16 else: 

17 text = raw_text 

18 elif (abs(val) >= 10.0 ** (precision + 1)) or ( 

19 abs(val) <= 10.0 ** (-precision - 1) 

20 ): 

21 text = "{val:.{prec}e}".format(val=val, prec=precision) 

22 else: 

23 text = f"{val}" 

24 if len(text) > precision + 2 + (text[0] == '-'): 

25 text = "{val:.{prec}f}".format(val=val, prec=precision) 

26 return text