fix: various fixes

Author: CharlotteLeBihan18

examples/wepr_demo_responses.json

@@ -36,7 +36,7 @@
       "prompt": "Who is Charles Moslonka ? Where was he born ? Please answer in two sentences.",
       "outputs": [
         {
-          "text": "Charles Moslonka is a French researcher born in Lyon in 1985.",
+          "text": "Charles Moslonka is a French singer born in Lyon in 1985.",
           "token_ids": [3001, 3002, 3003, 3004, 3005, 3006, 3007, 3008, 3009, 3010, 3011],
           "logprobs": [
             {
@@ -75,7 +75,7 @@
               "4043": {"decoded_token": " Czech",    "logprob": -2.30, "rank": 5}
             },
             {
-              "3006": {"decoded_token": " researcher","logprob": -1.70, "rank": 1},
+              "3006": {"decoded_token": " singer","logprob": -1.70, "rank": 1},
               "4050": {"decoded_token": " engineer",  "logprob": -1.90, "rank": 2},
               "4051": {"decoded_token": " writer",    "logprob": -2.00, "rank": 3},
               "4052": {"decoded_token": " professor", "logprob": -2.10, "rank": 4},

pyproject.toml

@@ -44,7 +44,6 @@ calibration = [
 ]
 adapters =[
     "langfuse>=4.6.1",
-    "python-dotenv>=1.2.2",
     "openai>=2.38.0",
 ]
 docs = [

src/artefactual/adapters/langfuse/evaluator.py

@@ -1,16 +1,11 @@
-from etils import epy
-
 from artefactual.preprocessing import parse_top_logprobs
 from artefactual.scoring.hallucination_detector import HallucinationDetector
 
-try:
-    from langfuse import Langfuse
-except ImportError as e:
-    epy.reraise(e, "Langfuse is not installed. Please install the 'langfuse' extra ")
-
+with epy.lazy_imports():
+  import langfuse
 
 class HallucinationEvaluator:
-    def __init__(self, name: str, langfuse_client: Langfuse, detector: HallucinationDetector) -> None:
+    def __init__(self, name: str, langfuse_client: langfuse.Langfuse, detector: HallucinationDetector) -> None:
         self.name = name
         self.langfuse = langfuse_client
         self.detector = detector