Hey Manish! Your post reminds me when I was that age starting out programming in HTML and CSS! It's good that they're so interested in python and those languages. It really depends on what kind of role they seek to be honest and they might know at this age.
I wanted to be a designer and a developer, and now i'm a full stack developer which has been something interesting because it gives me the flexibility to jump between technologies, always love learning something new and try out all the latest software between programming and art and design.
I would honestly say, as much as it would make you proud to send your daughters to college if they want to programme, I would say don't because a lot of developers are self taught and this is over-riding the complete education system for programming. The other thing is, they will also be out of date in their chosen language by the time they come out as the tech market is increasing moving too fast that no one can stay up to date.
If they want to just hold the legal certifications for programming then they could do this from home at a cost. If your older ones interested in art and design then certainly be worth sending her to college then she could hold the relevant qualifications in that area, and it will give her more of an insight into digital graphics which will lead to more adobe software but more in the university area (bare in mind the cost), it would be cheaper do just get the software your self, keep at it for a few years and she would walk out probably better and no uni costs!
Now the industry, I can tell you for women, it's a lot harder to get into the industry because we're doubted by fellow men unfortunately. I have had to push my way through this industry, I remember sitting in college classes, 3 women out of 30 men... But providing they have the confidence in their selected area they will knock them all down one by one ha! (might take awhile but certainly does happen!)
I aced my level 2 college course, and on two attempts I dropped my level 3 course, because the programming languages offered at the time were only available at university and so I grew easily bored and thought I would get better working experience in which I did. Still don't regret it!
I would recommend looking at the yearly tech stacks if they're interested, at the moment Python is trying to dominate Node JS and probably will because pythons more elastic and has the room to grow, but then you have other bits like react which is Front-end developing which is okay but I've heard the front-end developing market is going and a lot of developers from front-end are going to back-end to stay in that market.
I have a daughter which will be 4 in December and i'm hoping to get her straight into Scratch and Python and shes also got quite a creative flare for painting and drawing. I'm not sure where the future holds but if she wanted to do programming I would let her self teach her self as I do because these developers often come out a lot more stronger in the long run.
If your daughters can already start putting bits together at this age, try and build up a portfolio and by the time they want to enter the market, this would stand out but they do need to be unique.
Hope that helps and its wonderful truly to see that you're letting them get into programming, I do know women are thriving now in the software/web engineering industry and the market is changing so who knows what the future holds :)
keep us posted as would love to hear more how it turns out x