Most Efficient Method to Concatenate Strings in Python

Question

At the time of asking this question, I\'m using Python 3.8

When I say efficient, I\'m only referring to the speed at which the strings are concatenated,

Answer 1

For exactly two strings a and b, just use a + b. The alternatives are for joining more than 2 strings, avoiding the temporary str object created by each use of +, as well as the quadratic behavior due to repeatedly copying the contents of earlier operations in the next result.

(There's also f'{a}{b}', but it's syntactically heavier and no faster than a + b.)