Use the user role by default (#121)

Author: mandel

src/pdl/pdl_interpreter.py

@@ -127,7 +127,7 @@ class InterpreterState(BaseModel):
     batch: int = 1
     # batch=0: streaming
     # batch=1: call to generate with `input`
-    role: RoleType = None
+    role: RoleType = "user"
     cwd: Path = Path.cwd()
 
     def with_yield_result(self: "InterpreterState", b: bool) -> "InterpreterState":

tests/test_code.py

@@ -49,7 +49,7 @@ def test_contribute_context():
     state = InterpreterState()
     data = Program.model_validate(show_result_data(["context"]))
     _, background, _, _ = process_prog(state, empty_scope, data)
-    assert background == [{"role": None, "content": "How can I help you?: "}]
+    assert background == [{"role": "user", "content": "How can I help you?: "}]
 
 
 def test_contribute_false():

tests/test_var.py

@@ -126,7 +126,7 @@ def test_code_var():
     state = InterpreterState()
     data = Program.model_validate(code_var_data)
     text, _, scope, _ = process_prog(state, empty_scope, data)
-    assert scope == {"context": [{"role": None, "content": text}], "I": 0}
+    assert scope == {"context": [{"role": "user", "content": text}], "I": 0}
     assert text == "0"