diff --git a/src/environment_provider/environment.py b/src/environment_provider/environment.py
index 36bf439..8f1fbda 100644
--- a/src/environment_provider/environment.py
+++ b/src/environment_provider/environment.py
@@ -34,6 +34,7 @@
 
 TRACER = trace.get_tracer(__name__)
 
+
 def checkin_provider(
     item: dict, provider: Union[IutProvider, ExecutionSpaceProvider, LogAreaProvider]
 ) -> tuple[bool, Optional[Exception]]:
@@ -79,13 +80,13 @@ def release_environment(
 
     failure = None
 
-    span_name="stop_iuts"
+    span_name = "stop_iuts"
     with TRACER.start_as_current_span(span_name):
         success, exception = checkin_provider(Iut(**iut), IutProvider(etos, jsontas, iut_ruleset))
         if not success:
             failure = exception
 
-    span_name="stop_log_area"
+    span_name = "stop_log_area"
     with TRACER.start_as_current_span(span_name):
         success, exception = checkin_provider(
             LogArea(**log_area), LogAreaProvider(etos, jsontas, log_area_ruleset)
@@ -93,7 +94,7 @@ def release_environment(
         if not success:
             failure = exception
 
-    span_name="stop_execution_space"
+    span_name = "stop_execution_space"
     with TRACER.start_as_current_span(span_name):
         success, exception = checkin_provider(
             ExecutionSpace(**executor),
diff --git a/src/environment_provider/environment_provider.py b/src/environment_provider/environment_provider.py
index 39b9d1a..293c0e9 100644
--- a/src/environment_provider/environment_provider.py
+++ b/src/environment_provider/environment_provider.py
@@ -413,8 +413,7 @@ def checkout(
             self.environment_provider_config,
         )
         finished = []
-        timeout = self.checkout_timeout()
-        while time.time() < timeout:
+        while time.time() < self.checkout_timeout():
             self.set_total_test_count_and_test_runners(test_runners)
 
             with self.tracer.start_as_current_span("request_iuts") as span:
diff --git a/src/execution_space_provider/utilities/external_provider.py b/src/execution_space_provider/utilities/external_provider.py
index a604509..08c2b35 100644
--- a/src/execution_space_provider/utilities/external_provider.py
+++ b/src/execution_space_provider/utilities/external_provider.py
@@ -121,7 +121,6 @@ def checkin(self, execution_space: ExecutionSpace) -> None:
         otel_span.set_attribute("request.host", host)
         otel_span.set_attribute("request.headers", json.dumps(headers, indent=4))
         otel_span.set_attribute("request.body", json.dumps(execution_spaces, indent=4))
-        #opentelemetry.propagate.inject(headers) # inject current OpenTelemetry conext to HTTP request headers
         self.logger.info("OpenTelemetry context headers: %s", headers)
         timeout = time.time() + end
         first_iteration = True
@@ -131,9 +130,7 @@ def checkin(self, execution_space: ExecutionSpace) -> None:
             else:
                 time.sleep(2)
             try:
-                response = requests.post(
-                    host, json=execution_spaces, headers=headers
-                )
+                response = requests.post(host, json=execution_spaces, headers=headers)
                 if response.status_code == requests.codes["no_content"]:
                     return
                 response = response.json()
@@ -201,7 +198,6 @@ def start(self, minimum_amount: int, maximum_amount: int) -> str:
         otel_span.set_attribute("request.host", host)
         otel_span.set_attribute("request.headers", json.dumps(headers, indent=4))
         otel_span.set_attribute("request.body", json.dumps(data, indent=4))
-        #opentelemetry.propagate.inject(headers) # inject current OpenTelemetry conext to HTTP request headers
         self.logger.info("OpenTelemetry context headers: %s", headers)
         try:
             response = self.http.post(
@@ -236,7 +232,6 @@ def wait(self, provider_id: str) -> dict:
             else:
                 time.sleep(2)
             headers = {"X-ETOS-ID": self.identifier} 
-            #opentelemetry.propagate.inject(headers) # inject current OpenTelemetry conext to HTTP request headers
             self.logger.info("OpenTelemetry context headers: %s", headers)
             try:
                 response = requests.get(
diff --git a/src/log_area_provider/utilities/external_provider.py b/src/log_area_provider/utilities/external_provider.py
index 36eef53..b0bdd6b 100644
--- a/src/log_area_provider/utilities/external_provider.py
+++ b/src/log_area_provider/utilities/external_provider.py
@@ -124,9 +124,7 @@ def checkin(self, log_area: LogArea) -> None:
             else:
                 time.sleep(2)
             try:
-                response = requests.post(
-                    host, json=log_areas, headers=headers
-                )
+                response = requests.post(host, json=log_areas, headers=headers)
                 if response.status_code == requests.codes["no_content"]:
                     return
                 response = response.json()