Question

I had a pregnant chocolate doberman the gave birth to beautiful puppies. Lets exam the probability my doberman had 10 puppies and has exactly 3 girls.
Next lets look at the probability she had more than 3 girls.
Finally, lets look at the probability that she had at most 3 girls.
Assume a .5 chance of having a girl.  solve binomial probability question in python show how it done in python.