dict_instantiation.py

import dis

def func1():
    return {"x": 0, "y": 1}

def func2():
    return dict(x=0, y=1)

dis.dis(func1)
dis.dis(func2)

# Output:
# --------------------------------------------------------
#   4           0 LOAD_CONST               1 (0)
#               2 LOAD_CONST               2 (1)
#               4 LOAD_CONST               3 (('x', 'y'))
#               6 BUILD_CONST_KEY_MAP      2
#               8 RETURN_VALUE
#   7           0 LOAD_GLOBAL              0 (dict)
#               2 LOAD_CONST               1 (0)
#               4 LOAD_CONST               2 (1)
#               6 LOAD_CONST               3 (('x', 'y'))
#               8 CALL_FUNCTION_KW         2
#              10 RETURN_VALUE