Coverage for aiopromql/utils.py: 100%

1def make_label_string(negate_keys=None, **labels) -> str: 

2 """ 

3 Return PromQL label selector string from provided labels. 

4 

5 negate_keys: iterable of keys whose match should be negated (using !=). 

6 labels: key=value pairs for labels. 

7 """ 

8 negate_keys = set(negate_keys or []) 

9 # Filter out None values 

10 filtered = {k: v for k, v in labels.items() if v is not None} 

11 if not filtered: 

12 return "" 

13 parts = [] 

14 for k, v in filtered.items(): 

15 op = "!=" if k in negate_keys else "=" 

16 parts.append(f'{k}{op}"{v}"') 

17 return "{" + ",".join(parts) + "}"