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import numpy as np

import numpy as np # linear algebra

import pandas as pd

import pandas as pd # data processing, CSV file I/O (e.g. pd.read_csv)

import pandas as pd
import numpy as np
arquivos_de_treino = pd.read_csv('/kaggle/input/titanic/train.csv')
arquivos_de_teste = pd.read_csv('/kaggle/input/titanic/test.csv')

arquivos_de_treino = arquivos_de_treino.replace(np.nan, 0)
arquivos_de_teste = arquivos_de_teste.replace(np.nan, 0)

arquivos_de_treino.head()