# this does not work
pipeline = {
    {"resample" : {"type" : "trans", "name" : "resample", "kwargs" : {"rule" : "1min"}}}
}
pipeline
'''
---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
<ipython-input-10-7305ba79e664> in <module>
      1 pipeline = {
----> 2     {"resample" : {"type" : "trans", "name" : "resample", "kwargs" : {"rule" : "1min"}}}
      3 }
      4 pipeline

TypeError: unhashable type: 'dict'
'''

# this does work
pipeline = dict()
pipeline["resample"] = {"type" : "trans", "name" : "resample", "kwargs" : {"rule" : "1min"}}
pipeline
'''
{'resample': {'type': 'trans', 'name': 'resample', 'kwargs': {'rule': '1min'}}}
'''