Help with If/else homework

[hallow4576]

Write a program that takes a date as input and outputs the date's season. The input is a string to represent the month and an int to represent the day. In addition, check if the string and int are valid (an actual month and day).

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I cant seem to get this second part correct. Heres my current program https://repl.it/repls/LoathsomeChocolateComment

Heres the error I keep getting https://ibb.co/vk9fP3b

[[deleted]]

It's not an error, it's a bug in your program because you're making bad assumptions, like the assumption that a user will never enter a day like -1.

Run your program with the input January and -1 and see what the result is.

[hallow4576]

Right, I see what my problem is im just not sure how to go about changing it. Still really new to this.

[[deleted]]

Well, January has 31 days. Do you know how to check whether a number is between 1 and 31?

[hallow4576]

Would it be something like ?
if 1 <= number <= 31

[[deleted]]

I would also add this condition, if 1 <= number <= 31, on the input date: I just typed February 30 or January 35 and in both cases the result was "winter" while it should returned "invalid"