How do I read a gzipped CSV file in Julia?

Question

I have tried many libraries, but it seems that I cannot get the types to match.

Typical attempt:

using SomeLib, CSV
fh = SomeLib.open("gzipped_file.gz")
CSV.read(fh) # error

Example:

using CodecZlib
CSV.read(GzipDecompressorStream(open("gzipped_file.gz")))
# ERROR: MethodError: no method matching position(::TranscodingStreams.TranscodingStream{GzipDecompressor,IOStream})

Answer 1

In the meantime you can use CSVFiles.jl:

using CSVFiles, DataFrames, FileIO

open("yourfile.csv.gz") do io
    load(Stream(format"CSV", GzipDecompressorStream(io))) |> DataFrame
end