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[PLUS] Download Full Bitcoin Price History from CEX API using Python

We have put together another code heavy, ready to execute Python script for downloading the full Bitcoin (BTC) price history from the CEX cryptocurrency exchange. Of course, this means you can also download the full price history for any of crypto pairs on CEX. This script makes it super easy to do by creating a function that will dynamically ask the CEX API to return us a list of all available tickers! As of the time of publishing, this is around ~110 distinct cryptocurrency symbols offered for trading.

If you have ever interacted with the cryptocurrency exchange CEX's API, you will likely have already noticed that its return response is a little different than most other exchange APIs. CEX returns a JSON object (in JSON Lines format) that has 3 distinct sub lists in it: Daily, Hour, and Minute candles inside. This gives us a ton of information in every response! In our script, we are going to only focus on one of the granularity intervals at a time since we will eventually write it to a CSV. To execute the script as is will perform the following steps:

(1) Run get_symbols() function to find all crypto pairs available for trading on CEX
(2) Pull full price history of each of the symbols all the way to the asset's first trading day on CEX
(3) Save each symbol as its own CSV filename in this format: "CEX_BTCUSD_day.csv" (example).

Like all of our educational and code based articles, we write code comments on every line so you can follow our logic in every step. We believe this makes it extremely easy to modify for your own purposes!

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