Here is the corrected sentence:
What colour will the python be?
Or in American spelling: What color will the python be?
Short explanation for a 6-year-old:
- When you ask about the future, put will before the person or thing. So say will before the python.
- That makes the sentence sound right: "What colour will the python be?"
Other good ways to ask:
- What colour snake will we get?
- What colour will our python be?
Note: "colour" is British spelling and "color" is American spelling. Both are correct.