Python can be used to fetch data from open source and commercial APIs. We can use it to fetch data in several formats. Some of them output data in JSON format, some in XML, and some in tabular formats such as CSV and DataFrames. Once converted into DataFrames, this data is generally processed in pandas.
In this section, we will look at an example of fetching data from the Quandl API, which is an open source API that contains data on a variety of topics such as financial, economic, and alternative data. You can have a look at this famous data repository here: https://www.quandl.com/.
An api key is an application programming interface that acts as a mediator between a developer or any other user who wishes to access the data within the website using a computer code. An api key is a piece of code that identifies the user and their associated account...