[英]How can i add just one row in dataframe when I convert from array to pandas.dataframe
[英]How can I add pandas.Dataframe to file that is created as test_data?
我像这样分割训练数据的数据和机器学习的测试数据
train_df, test_df = train_test_split(df, test_size=0.2, random_state=42)
现在我想将每个数据保存到“./train_data”或“./test_data”等可访问的“train_data”和“test_data”文件中
但我不知道怎么做。 我发现有“to_csv”,但我认为不是因为这个,因为当我这样做的时候
test_df.to_csv('./test_data')
我收到错误消息说 IsADirectoryError: [Errno 21] Is a directory: './test_data'。 我应该怎么做?
import pandas as pd
from sklearn.model_selection import train_test_split
#creating your dataframe
df = ...
train_data, test_data = train_test_split(df, test_size=0.2, random_state=42)
train_data.to_csv(open('train_data.csv','w'))
test_data.to_csv(open('test_data.csv','w'))
#you can optionally add an encoding, on my machine I always use encoding="utf-8"
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