fix mypy

Author: anafalcao

Diff for: aws_lambda_powertools/metrics/provider/cloudwatch_emf/cloudwatch.py

@@ -94,7 +94,8 @@ def is_metrics_disabled() -> bool:
         if constants.METRICS_DISABLED_ENV not in os.environ:
             return False
 
-        is_disabled = resolve_truthy_env_var_choice(env=os.getenv(constants.METRICS_DISABLED_ENV))
+        env_value = os.getenv(constants.METRICS_DISABLED_ENV)
+        is_disabled = resolve_truthy_env_var_choice(env=env_value or "false")
         if is_disabled:
             logger.debug("Metrics have been disabled via env var POWERTOOLS_METRICS_DISABLED")
         return bool(is_disabled)

Diff for: aws_lambda_powertools/metrics/provider/datadog/datadog.py

@@ -73,7 +73,8 @@ def is_metrics_disabled() -> bool:
         if constants.METRICS_DISABLED_ENV not in os.environ:
             return False
 
-        is_disabled = resolve_truthy_env_var_choice(env=os.getenv(constants.METRICS_DISABLED_ENV))
+        env_value = os.getenv(constants.METRICS_DISABLED_ENV)
+        is_disabled = resolve_truthy_env_var_choice(env=env_value or "false")
         if is_disabled:
             logger.debug("Metrics have been disabled via env var POWERTOOLS_METRICS_DISABLED")
         return bool(is_disabled)