impure_python.py

def updatedict(fails, d, k, m):
  f = fails
  fc = "failcount"
  f[d] = f.get(d, dict())
  f[d][k] = f[d].get(k, dict())
  f[d][k][m] = f[d][k].get(m, dict())
  f[d][k][m][fc] = f[d][k][m].get(fc, 0) + 1
  return f