Composite python dictionary with several values ​​from other dictionaries in an identical key

I will immediately make a reservation & ndash; I am not a programmer, but I study Python for my own specific purposes (processing data obtained from the network), so if my question seems naive and simple & ndash; I ask you not to blame.

So, there are three different dictionaries with identical keys. Values ​​& ndash; Different, but can coincide both within one dictionary and in different dictionaries. For example (I did the values ​​in the form of a list, because I understand that it will not work out to add values ​​in a different way):

  Dict_1 = { `` `SPAN>: [ 2 ],   'b' : [ 8 ],   'c' : [ 6 ],   'd' : [ 2 ]} dict_2 = { '' a 'a'  2 ],   'b' : [ 7 ],   'c' : [ 7 ],   'd' : [ 3 ]} dict_3 = { 'a' a ': [ 3 ],  ' b ':  6 ],   'c' : [ 8 ],   'd' : [ 3 ]}     
 Task: to get a new dictionary (either from scratch or based on one of these & ndash; absolutely not important) in which each key will receive values ​​from all three dictionaries: 
  
  DICT_ALL = { 'a' : [ 2 ,  2 ,  3 ],   'b' : [ 8 ,  7 ,  6 ],   'c' : [ 6 ,  7 ,  8 ],   'd' : [ 2 ,  3 ,  3 ]}