Identify the error in the following Strategy pattern implementation:

Identify the error in the following Strategy pattern implementation:

class Context:
    def __init__(self, strategy):
        self.strategy = strategy
    def execute(self):
        return self.strategy.action()

class StrategyA:
    def do_action(self):
        return 'Action A'

context = Context(StrategyA())
print(context.execute())