bytesio Questions
3
Solved
I have a function that gets a page from a PDF file via PyPDF2 and should convert the first page to a png (or jpg) with Pillow (PIL Fork)
from PyPDF2 import PdfFileWriter, PdfFileReader
import os
fr...
8
I am using the Pillow fork of PIL and keep receiving the error
OSError: cannot identify image file <_io.BytesIO object at 0x103a47468>
when trying to open an image. I am using virtualenv w...
Forgetmenot asked 26/6, 2015 at 15:49
4
Solved
I am using this function to uncompress the body of a HTTP response if it is compressed with gzip, compress or deflate.
def uncompress_body(self, compression_type, body):
if compression_type == 'gz...
Mccollough asked 10/1, 2019 at 22:26
2
Solved
If I run following code in python 3
from io import BytesIO
import csv
from io import TextIOWrapper
def fill_into_stringio(input_io):
writer = csv.DictWriter(TextIOWrapper(input_io, encoding='ut...
Replica asked 25/1, 2018 at 1:50
3
Solved
I wanted to try out the python BytesIO class.
As an experiment I tried writing to a zip file in memory, and then reading the bytes back out of that zip file. So instead of passing in a file-object ...
3
Solved
Hi I am trying to convert my df to binary and store it in a variable.
my_df:
df = pd.DataFrame({'A':[1,2,3],'B':[4,5,6]})
my code:
import io
towrite = io.BytesIO()
df.to_excel(towrite) # write...
2
According to the BytesIO docs:
getbuffer()
Return a readable and writable view over the contents of the buffer without copying them. Also, mutating the view will transparently update the cont...
Ideograph asked 20/4, 2020 at 9:49
1
Solved
See update at bottom - question slightly changed
I'm trying to download a file from s3 to a file-like object using boto3's .download_fileobj method, however when I try to inspect the downloaded byt...
2
Solved
I can't understand the difference of these two BytesIO objects.
If i do this :
f = open('decoder/logs/testfile.txt', 'rb')
file = io.BytesIO(f.read())
decode(file,0)
then in decode method this ...
1
Solved
I have found How to return a numpy array as an image using FastAPI?, however, I am still struggling to show the image, which appears just as a white square.
I read an array into io.BytesIO like so:...
2
Solved
So a quick way to write a BytesIO object to a file would be to just use:
with open('myfile.ext', 'wb') as f:
f.write(myBytesIOObj.getvalue())
myBytesIOObj.close()
However, if I wanted to iterat...
4
Solved
This code is simplification of code in a Django app that receives an uploaded zip file via HTTP multi-part POST and does read-only processing of the data inside:
#!/usr/bin/env python
import csv,...
1
Solved
I want to give xlsx on request. With using BytesIO and xlsxwriter I create a file.
Using the code below, I can download an empty(!) .txt file:
@router.get("/payments/xlsx", response_descr...
Polyandry asked 18/8, 2020 at 8:55
1
Solved
My target file on the FTP server is a ZIP file, and the .CSV is located two folders further in.
How would I be able to use BytesIO to allow pandas to read the csv without downloading it?
This is wh...
1
Solved
3
In Python 3, I can get the size of a ByteIO object via object.getbuffer().nbytes (where object = ByteIO()), but what would be the best equivalent for getbuffer() in Python 2? Doing some exploring, ...
Loveliesbleeding asked 14/8, 2017 at 18:50
2
What I am trying to do is basically:
Get PDF from URL
Modify it via pdfrw
Store it in memory as
a BytesIO obj
Upload it into a Django FileField via
Model.objects.create(form=pdf_file, name="Some...
1
Solved
I have found that there are a lot of similarities between both modules in the area of creating temp files using io.BytesIO() or io.StringIo() and tempfile.TemporaryFile()
What is the purpose of eac...
Intenerate asked 29/1, 2020 at 13:5
1
Solved
I have a file and want to convert it into BytesIO object so that it can be stored in database's varbinary column.
Please can anyone help me convert it using python.
Below is my code:
f = open(fi...
1
Solved
I am using pandas library to store excel into bytesIO memory. Later, I am storing this bytesIO object into SQL Server as below-
df = pandas.DataFrame(data1, columns=['col1', 'col2', 'col3'])
out...
Enzootic asked 15/12, 2019 at 21:44
1
Solved
I am attempting to pull a file from AWS S3, using Boto3, directly into a BytesIO object. This will eventually be used to manipulate the downloaded data but for now I'm just trying to give that file...
3
I want to upload a text string as a file via FTP.
import ftplib
from io import StringIO
file = StringIO()
file.write("aaa")
file.seek(0)
with ftplib.FTP() as ftp:
ftp.connect("192.168.1.104", ...
Samarskite asked 26/5, 2015 at 4:3
3
Solved
I'm trying to understand the write() and read() methods of io.BytesIO.
My understanding was that I could use the io.BytesIO as I would use a File
object.
import io
in_memory = io.BytesIO(b'hello'...
1
Solved
Create a zip file from a generator in Python? describes a solution for writing a .zip to disk from a bunch of files.
I have a similar problem in the opposite direction. I am being given a generato...
Piecework asked 25/8, 2016 at 22:54
1
Solved
Any ideas on how to create a 1 X 2 HTML table where cell {0} is a matplotlib plot and cell {1} is a text description for Python 3.X?
import matplotlib.pyplot as plt
from io import BytesIO
%matplot...
Chemisette asked 24/6, 2017 at 23:19
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