import yaml
# ...
import argparse
parser = argparse.ArgumentParser()
parser.add_argument('rargs', nargs='*', default=[])
a = parser.parse_args()
with open(a.rargs[0], 'r') as file:
    # The FullLoader parameter handles the conversion from YAML
    # scalar values to Python the dictionary format
    xx = yaml.load(file)
    print(yaml.dump(xx))

    for x in xx:
        print(x)
        print(xx[x])
        c = xx[x]
        print(c)
        if isinstance(c, str):
            pass
        else:
            try:
                print(c['delay'])
            except KeyError:
                pass