From France, it is not very difficult to get to Cape Verde, several options are available to you depending on the city in France from which you wish to take off.
From Paris, there are direct flights with the island of Praia and Sal in particular.
On the other hand, if you want to take off from another city in France, either you stopover in Paris, or you can stopover in Lisbon in Portugal with the airline TAP.
For my part, that's what I did, I left Toulouse and therefore took the TAP with a stopover in Lisbon on the way there but also on the way back.