3. 理解数据类型

  1.  in[14]: movie = pd.read_csv('data/movie.csv')
  2.          #  各列的类型
  3.  in[15]: movie.dtypes
  4. out[15]: color                       object
  5.          director_name               object
  6.          num_critic_for_reviews     float64
  7.          duration                   float64
  8.          director_facebook_likes    float64
  9.                                      ...   
  10.          title_year                 float64
  11.          actor_2_facebook_likes     float64
  12.          imdb_score                 float64
  13.          aspect_ratio               float64
  14.          movie_facebook_likes         int64
  15.          Length: 28, dtype: object
  1.  in[16]: #  显示各类型的数量
  2.          movie.get_dtype_counts()
  3. out[16]: float64    13
  4.          int64       3
  5.          object     12
  6.          dtype: int64