decompressing huge json gzip file causing memory error in python
Create a decompression object using z=zlib.decompressobj(), and then do z.decompress(some_compressed_data, max), which will return no more than max bytes of uncompressed data. You then call again with z.decompress(z.unconsumed_tail, max) until the rest of some_compressed_data is consumed, and then feed it more compressed data.
You will need to then be able to process the resulting uncompressed data a chunk at a time.