1  ;; Subscript with string: os.environ["VAR"] or os.environ['VAR']
 2  (subscript
 3    value: (_) @object
 4    subscript: (string)
 5  ) @completion_target
 6  
 7  ;; os.getenv("VAR") function call
 8  (call
 9    function: (attribute
10      object: (identifier) @object
11      attribute: (identifier) @func)
12    (#eq? @object "os")
13    (#eq? @func "getenv")
14  ) @completion_target
15  
16  ;; environ.get/pop/setdefault("VAR") method calls
17  (call
18    function: (attribute
19      object: (_) @object
20      attribute: (identifier) @func)
21    (#match? @func "^(get|pop|setdefault)$")
22  ) @completion_target
23  
24  (attribute
25    object: (attribute) @object
26  ) @completion_target
27  
28  ;; Handle incomplete syntax: "env." parses as ERROR
29  ;; Exclude "os" since it's a module that CONTAINS env objects, not one itself
30  (ERROR
31    (identifier) @object
32    (#not-eq? @object "os")
33  ) @completion_target
34  
35  (ERROR
36    (attribute) @object
37  ) @completion_target
38  
39  ;; Handle incomplete subscript: os.environ[' or os.environ["
40  ;; Tree-sitter creates ERROR nodes when string is incomplete
41  (ERROR
42    (subscript
43      value: (_) @object)
44  ) @completion_target