circuitpython/tests/basics/fun_calldblstar2.py

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# test passing a string object as the key for a keyword argument
# they key in this dict is a string object and is not interned
args = {'thisisaverylongargumentname': 123}
# when this string is executed it will intern the keyword argument
exec("def foo(*,thisisaverylongargumentname=1):\n print(thisisaverylongargumentname)")
# test default arg
foo()
# the string from the dict should match the interned keyword argument
foo(**args)