python - Pandas 在 BytesIO 中将 df 存储到 csv

Question

我想将 df 的输出存储到 csv 的 BytesIo() 内存对象中(不是 StringIO) 然后压缩它，这是我的尝试:

import pandas as pd
import numpy as np
import io
import zipfile
df = pd.DataFrame(np.random.randn(100, 4), columns=list('ABCD'))
s_buf = io.BytesIO()
df.to_csv(s_buf)
s_buf.seek(0)
localfile= io.BytesIO()
zf = zipfile.ZipFile(localfile, mode="w",compression=zipfile.ZIP_DEFLATED)
zf.writestr(localfile, s_buf.read())
zf.close()
with open("D:/my_zip.zip", "wb") as f: # use `wb` mode
    f.write(zf.getvalue())

Answer 1

我认为这会有所帮助:-

import gzip
from io import BytesIO
import pandas as pd
import numpy as np

df = pd.DataFrame(np.random.randn(100, 4), columns=list('ABCD'))
b_buf = BytesIO()
with gzip.open(b_buf, 'wb') as f:
    f.write(df.to_csv().encode())
b_buf.seek(0)
with open("my_zip.zip", "wb") as f:
    f.write(b_buf.getvalue())