text: from copy import deepcopy
  # d = {}
  # d['names'] =['Alfred','Bertrand']
  # print(d)
  # c = d.copy()
  # dc = deepcopy(d)
  # dc['names'].append('omg')
  # d['names'].append('Clive')
  # print(d)
  # print(c)
  # print(dc)
  
  # x = {'username':'admin','machines':['foo','bar','baz']}
  # y=x.copy()
  # y['username'] = 'mlh'
  # y['machines'].remove('bar')
  # print(x)
  # print(y)
  # y['machines'].append('fool')
  # print(x)
  # print(y)
  # y.pop('machines')
  # print(x)
  # print(y)
  
  x = ["name","sex"]
  y = x
  
  print(x)
  