Comprising different compressing methods for JSON data in python3

Question

So, I want to compress my JSON data using different compressor. I used this to compress the JSON.

import gzip
import JSON

with gzip.GzipFile('2.json', 'r') as isfile:
    for line in isfile:
        obj = json.loads(line)

which raises error.

raise OSError('Not a gzipped file (%r)' % magic)

OSError: Not a gzipped file (b'[
')

I also tried direct compressing using.

zlib_data= zlib.compress(data)

which raises an error.

return lz4.block.compress(*args, **kwargs)

TypeError: a bytes-like object is required, not 'list'

So, Basically i want to compress a JSON using all the methods and to compute the time taken for the compression in different methods.