The whole reason France went nuclear is to have energy independence, because you can source uranium from pretty much anywhere (unlike fossil fuels).
The largest exporters of uranium in the world are Kazakhstan, Canada and Australia. Those aren't former French colonies. But, yes, there are also countries in Africa that export uranium, but that's the point; if you look at a map of uranium reserves you'll find it's pretty much all over the world (and not really that much in Africa, actually).
To my (limited) knowledge 100% of nuclear fuel used by French nuclear facilities comes from former french colonies in Africa, although french companies (Areva) are involved in uranium exploitation in other parts of the world as well.
I'm not saying french (neo-)colonies are the only place to get uranium from. I'm saying it's very cozy to have the dictators your colonial secret services set up over the years provide you with cheap resources.
The whole reason France went nuclear is to have energy independence, because you can source uranium from pretty much anywhere (unlike fossil fuels).
The largest exporters of uranium in the world are Kazakhstan, Canada and Australia. Those aren't former French colonies. But, yes, there are also countries in Africa that export uranium, but that's the point; if you look at a map of uranium reserves you'll find it's pretty much all over the world (and not really that much in Africa, actually).