I’m adding entries into a multi-level dict like this…

d = {}

level1 = "some level1 value"
level2 = "some level2 value"
level3 = "some level3 value"
data = "some data"

try: d[level1]
except: d[level1] = {}
try: d[level1][level2]
except: d[level1][level2] = {}
d[level1][level2][level3] = data

Is there a better way to build this dict?