from metaflow import FlowSpec, step
import os
global_value = 5


class ProcessDemoFlow(FlowSpec):
    @step
    def start(self):
        global global_value
        global_value = 9
        print('process ID is', os.getpid())
        print('global_value is', global_value)
        self.next(self.end)

    @step
    def end(self):
        print('process ID is', os.getpid())
        print('global_value is', global_value)


if __name__ == '__main__':
    ProcessDemoFlow()