[python] Unpack and assign dictionary type arguments

Unpack and assign dictionary type arguments

When assigning a large number of arguments at once, it is very convenient to unpack and assign dictionary type arguments. I’ll write it down so I don’t forget.

github

• The file in jupyter notebook format on github is here.

google colaboratory

• If you want to run it on google colaboratory here

Author’s environment

sw_vers

ProductName: Mac OS X
ProductVersion: 10.14.6
BuildVersion: 18G9323

Python -V

Python 3.8.5

Prepare a function with three arguments

def test(a,b,c):
  print('a : ', a)
  print('b : ', b)
  print('c : ', c)

Unpack and assign a list type.

arg = [
   '123',
   '456',
   '789',
]

test(*arg)

a : 123
b : 456
c : 789

Unpack and assign dictionary types.

arg = {
  'a': '123',
  'b': '456',
  'c': '789',
}

test(**arg)

a : 123
b : 456
c : 789

This is a simple example, but I wrote it down so you can go back later.