07_dict.py 1.3 KB

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  1. emptyDict = dict()
  2. assert len(emptyDict) == 0
  3. tinydict = {'Name': 'Tom', 'Age': 7, 'Class': 'First'}
  4. assert tinydict['Name'] == 'Tom';assert tinydict['Age'] == 7
  5. tinydict['Age'] = 8;tinydict['School'] = "aaa"
  6. assert tinydict['Age'] == 8;assert tinydict['School'] == "aaa"
  7. del tinydict['Name']
  8. assert len(tinydict) == 3
  9. tinydict.clear()
  10. assert len(tinydict) == 0
  11. dict1 = {'user':'circle','num':[1,2,3]}
  12. dict2 = dict1.copy()
  13. for k,v in dict1.items():
  14. assert dict2[k] == v
  15. tinydict = {'Name': 'circle', 'Age': 7}
  16. tinydict2 = {'Sex': 'female' }
  17. assert len(tinydict) == 2
  18. assert len(tinydict2) == 1
  19. tinydict.update(tinydict2)
  20. updated_dict = {'Name': 'circle', 'Age': 7, 'Sex': 'female'}
  21. for k,v in tinydict.items():
  22. assert updated_dict[k] == v
  23. assert len(tinydict) == 3
  24. assert tinydict == updated_dict
  25. dishes = {'eggs': 2, 'sausage': 1, 'bacon': 1, 'spam': 500}
  26. keys = dishes.keys()
  27. values = dishes.values()
  28. assert sorted(keys) == sorted(['eggs', 'sausage', 'bacon', 'spam'])
  29. assert sorted(values) == sorted([2, 1, 1, 500])
  30. d={1:"a",2:"b",3:"c"}
  31. result=[]
  32. for k,v in d.items():
  33. result.append(k)
  34. result.append(v)
  35. assert len(result) == 6
  36. assert set(result) == set([1, 'a', 2, 'b', 3, 'c'])
  37. # test __eq__
  38. d1 = {1:2, 3:4}
  39. d2 = {3:4, 1:2}
  40. d3 = {1:2, 3:4, 5:6}
  41. assert d1 == d2
  42. assert d1 != d3
  43. a = dict([(1, 2), (3, 4)])
  44. assert a == {1: 2, 3: 4}