a simple task runner

task_runner.py

""""
A simple task runner like Grunt or Gulp for Python, but uses only two types of tasks:
`build` and `concat`. Will extend for more tasks, like `clean` and `compile`.
"""

class task:
    def __init__(self, actionfile, run=True, concat=False, concat_file=False, concat_new_file=False):
        self.file = actionfile
        if concat:
            self.concat = True
            self.other_file = concat_file
            self.new_file = concat_new_file

    def run(self):
        if self.build:
            with open(self.file) as build:
                eval(build)
        elif self.concat:
            one = str(open(self.file))
            two = str(open(self.concat_file))
            three = open(self.new_file)
            print(str(one + two), file=three)

if __name__ == "__main__":
    with open("taskfile.py") as tasks:
        eval(tasks)