get file size of the file from the file object

Question

I need to know the size of the file based on file object

import csv
import os
with open("test.csv", "rb") as infile:
    reader = csv.reader(infile)
    print reader
    filesize(reader)
def filesize(reader):
    os.getsize(reader) #And i need work with reader for more details.so I must need to pass a reader or file object

When I run this I got an output is

<_csv.reader object at 0x7f5644584980>

From this file object how I get the size of the file?

And I checked this site but these are not CSV attribute size of an open file object

EDIT: When I use that two inbuilt function I got errors that are

AttributeError: '_csv.reader' object has no attribute 'seek' AttributeError: '_csv.reader' object has no attribute 'tell'

@I told that into my question i tested in this site.It is not valid in csv file — bob marti
– bob marti, Commented Apr 7, 2017 at 12:34
@CristiFati It is not duplicates.Why you said that it is duplicate.Can u prove that — bob marti
– bob marti, Commented Apr 7, 2017 at 12:37
@bobmarti Its a duplicate because the best method in your case seems to be the one indicated in the accepted answer. — TrakJohnson
– TrakJohnson, Commented Apr 7, 2017 at 12:38

princelySid · Accepted Answer · 2021-03-23 09:36:32Z

4

Adding this answer because it actually answers the question asked about using the file object directly:

import csv
import os
with open("test.csv", "rb") as infile:
    reader = csv.reader(infile)
    print reader
    infile.seek(0, os.SEEK_END)
    filesize = infile.tell()

edited Mar 23, 2021 at 9:36

answered Mar 23, 2021 at 9:27

princelySid

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Comments

Colin 't Hart · Accepted Answer · 2022-10-12 07:40:52Z

4

You can use os.path.getsize or os.stat

import os
os.path.getsize('test.csv')

OR

os.stat('test.csv').st_size

Return the size, in bytes.

edited Oct 12, 2022 at 7:40

Colin 't Hart

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answered Apr 7, 2017 at 12:39

Dineshkarthik Raveendran

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Comments

0xdead · Accepted Answer · 2017-04-07 12:36:25Z

2

What's wrong with os.path.getsize?

With your code:

import os
import csv
with open("test.csv", "rb") as infile:
   reader = csv.reader(infile)
   print os.path.getsize(infile.name)

The size is in bytes.

answered Apr 7, 2017 at 12:36

0xdead

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2 Comments

bob marti Over a year ago

@duan I need to pass the reader into another function then how i get the solution

0xdead Over a year ago

@bobmarti, you can't access the file/path from the reader, it design to get an iterable, not a file, you will have to pass the filesize/file object to your other function.

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