dqdl 0.1.0

Dune query result downloader

dqdl

dqdl ("Dune Query DownLoader") is a simple tool that downloads Dune query result.

Quickstart

Let's fetch the result of query #3945714 – a simple table that lists the number of smart contracts created on each chain over the last 7 days. First, install dqdl from PyPI:

pip install dqdl

Ensure that there is an .env file in the current working directory with the following line in it:

DUNE_API_KEY=YourDuneAPIKeyHere

(Need an API key? Sign up and log into Dune, then create your own key.)

Then run:

dqdl 3945714

The result should be saved in 3945714.csv in the current directory:

$ head -5 3945714.csv 
blockchain,count
polygon,1376013.0
base,758165.0
optimism,588968.0
bnb,80817.0

Usage

dqdl [-k SPEC] [-e FILE] [-E] [-o FILE] [-f FORMAT] QUERY

QUERY is the query number, that is, the XXXXXX part in https://dune.com/queries/XXXXXXX.

Specifying API key

dqdl requires a Dune API key and by default reads one from the environment variable named DUNE_API_KEY.

Use -k SPEC to specify somewhere else to read the key; see openssl-passphrase-options(1) for the SPEC syntax.

API key in .env

If the API key is from an environment variable (as in the default) and the variable does not exist in the environment, dqdl looks it up in a file named .env in the current directory—if one exists. This "dotenv" file contains environment variables in the NAME=VALUE format, one per line.

You can choose another file instead of .env with -e FILE. Note: absence of this file is silently ignored, so beware typos!

If you want to avoid using the .env file even if one exists, you can disable dotenv processing altogether with -E.

Output location

The result is saved into a file named after the query number and the format, e.g. 3945714.csv. The filename can be changed with -o FILE (-o - means stdout).

Output format

By default, the output is saved in csv (comma-separated values) format.

You can change the output format with -f FORMAT. The FORMAT may be csv or pqt (Apache Parquet).

Limitation

dqdl loads the entire query result in memory (for now), and may fail if the result is too big to fit in memory.