Fix AttributeError in ConcurrentWorkflow by Properly Initializing Tasks List

[sambhavnoobcoder]

Description:

The ConcurrentWorkflow class was raising an AttributeError because the tasks attribute was not properly initialized in the class constructor. When the run() method attempted to access self.tasks, it failed because the attribute didn't exist. This caused workflows to fail when trying to execute tasks, particularly affecting use cases where tasks were added incrementally or when running multiple tasks in sequence.

Root Cause:

• The tasks attribute was missing from the class's init method
• The code assumed the existence of self.tasks but never properly initialized it
• This caused the workflow to fail immediately upon attempting to access the tasks list

Solution:

The fix implements the following changes:

• Added proper initialization of self.tasks = [] in the init method
• Modified the task handling logic to append tasks when they're provided to the run() method
• Ensured the tasks list is always available, even if empty
• Added proper type hints and documentation for the tasks attribute

Benefits:

• Prevents AttributeError when accessing tasks
• Allows for both single-task and multi-task execution
• Maintains state of tasks throughout the workflow's lifecycle
• Improves code reliability and predictability

Breaking Changes:

• None. This is a backward-compatible fix that maintains the existing API while resolving the underlying issue.

Related Issues:
Fixes #511

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📚 Documentation preview 📚: https://swarms--613.org.readthedocs.build/en/613/