class MyClass:

  def __init__(self, my_dict):
    self.my_dict = my_dict

  def add(self, key, item):
    self.my_dict[key] = item

  def delete(self, key):
    del self.my_dict[key]

  def search(self, item):
    return self.my_dict.get(item)

  def show(self):
    for k, v in self.my_dict.items():
      print('{}: {}'.format(k, v))




my_dict = {'name0': 'number0', 'name1':'number1', 'name2':'number2'}

m = MyClass(my_dict)
# m.show()

m.add('name99', 'number99')
# m.show()
m.delete('name0')
#m.show()
print(m.search('name99'))