cutting a new version addressin backward compatibility

src/crewai/agent.py

@@ -256,9 +256,10 @@ class Agent(BaseModel):
 
     def interpolate_inputs(self, inputs: Dict[str, Any]) -> None:
         """Interpolate inputs into the agent description and backstory."""
-        self.role = self.role.format(**inputs)
-        self.goal = self.goal.format(**inputs)
-        self.backstory = self.backstory.format(**inputs)
+        if inputs:
+            self.role = self.role.format(**inputs)
+            self.goal = self.goal.format(**inputs)
+            self.backstory = self.backstory.format(**inputs)
 
     def increment_formatting_errors(self) -> None:
         """Count the formatting errors of the agent."""

src/crewai/crew.py

@@ -70,7 +70,7 @@ class Crew(BaseModel):
     )
     inputs: Optional[Dict[str, Any]] = Field(
         description="Any inputs that the crew will use in tasks or agents, it will be interpolated in promtps.",
-        default={},
+        default=None,
     )
     config: Optional[Union[Json, Dict[str, Any]]] = Field(default=None)
     id: UUID4 = Field(default_factory=uuid.uuid4, frozen=True)

src/crewai/task.py

@@ -175,9 +175,10 @@ class Task(BaseModel):
 
     def interpolate_inputs(self, inputs: Dict[str, Any]) -> None:
         """Interpolate inputs into the task description and expected output."""
-        self.description = self.description.format(**inputs)
-        if self.expected_output:
-            self.expected_output = self.expected_output.format(**inputs)
+        if inputs:
+            self.description = self.description.format(**inputs)
+            if self.expected_output:
+                self.expected_output = self.expected_output.format(**inputs)
 
     def increment_tools_errors(self) -> None:
         """Increment the tools errors counter."""