I am getting KeyError with format command

[skpy]

print("{'1','2','3'} type is {}".format(type({'1', '2', '3'})))

This line throws KeyError.

File "c:/ex2_type.py", line 12, in main
print("\{'1','2','3'\} type is {}".format(type({'1', '2', '3'})))
KeyError: "'1','2','3'\\"

I want to use the format command to print the desired output. What needs to be changed?

[menator01]

>>> print(f'{"key":1} is {type({"key":1})}')

Output:
key is <class 'dict'>

[deanhystad]

These work.

print('{} type is {}'.format("{'1','2','3'}", type({'1', '2', '3'})))
print("{{'1','2','3'}} type is {}".format(type({'1','2','3'})))
print(f"{{'1','2','3'}} type is {type({'1','2','3'})}")

Output:
{'1','2','3'} type is <class 'set'>
{'1','2','3'} type is <class 'set'>
{'1','2','3'} type is <class 'set'>

[skpy]

I appreciate your responses. It worked!