What is the proper SQLAlchemy Type to store big strings?

Question

I am learning sqlalchemy and I am a little confused about what type should I use to store data, which can be even 20000 character long. Is it a good idea to use Unicode(20000)? I am afraid, that in case of shorter texts I will waste to much memory.

Answer 1

For that type of data you can use Text or UnicodeText. They do not require you to specify length.