class Employee:
 def __init__(self, id, mgrId, name):
  self.id = id
  self.mgrId = mgrId
  self.name = name
    
# sample data
#E = [Employee(1, 0, 'ABC'), Employee(2, 1, 'DEF'), Employee(3, 1, 'GHI')]
E = [Employee(1, 1, 'ABC'), Employee(4,4,'IJK'), Employee(2, 1, 'DEF'), Employee(5,4,'MNO'), Employee(3, 1, 'GHI')]

def directReportsBFS(E,s):
 Q = []
 level = 0
 Q.append(s)
 while (len(Q) > 0):
  c = Q.pop(0)
  if c is None:
   level = level + 1
   continue
  Reports = [e for e in E if e.mgrId == c.id and e.mgrId != e.id]
  print 'Name:' + c.name + ' Level:' + str(level) + ' Reports:' +"[{0}]".format(", ".join(str(r.name) for r in Reports))
  Q.append(None)
  all(Q.append(report) for report in Reports)


[directReportsBFS(E,e) for e in E if e.mgrId == e.id]