How to sort rows of data by the first column of two

Question

I have a lot of values from some txt file.
The first column is time.
How to sort these two columns to increase by the first using Python?

2.562021e-4 '3.2'
2.570725e-4 'X'
2.570737e-4 '5.1'
2.619516e-4 'X'
2.619521e-4 '6.1'
2.628225e-4 'X'
2.628237e-4 '1.3'
2.680767e-4 'X'

I guess it may be done with using libraries' keys..

Answer 1

You can also use pandas dataframe. You should be able to read txt / csv file directly. Dataframe allows sorting and many other features.

Answer 2

Jay, thanks bro! But Idk what to do with it)