Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!

StringIO¶

In [1]:

from io import StringIO

In [2]:

sio = StringIO("")
sio

Out[2]:

<_io.StringIO at 0x7ff1ec50e940>

In [3]:

sio.write("hello world")

Out[3]:

In [4]:

sio.getvalue()

Out[4]:

'hello world'

BytesIO¶

You can write anything into a BytesIO. For example, you can pass a BytesIO to pandas.DataFrame.to_parquet to write a pandas DataFrame to the BytesIO in the Parquet format. For more details, please refer to Pandas IO.

In [5]:

from io import BytesIO

In [6]:

bio = BytesIO()
bio

Out[6]:

<_io.BytesIO at 0x7ff1ec5340e0>

In [7]:

bio.write(b"hello world")
bio

Out[7]:

<_io.BytesIO at 0x7ff1ec5340e0>

In [8]:

bio.getvalue()

Out[8]:

b'hello world'

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