Python / Pandas-如何read_csv并同时忽略具有＃的行？

Question

My files have two formats ...some have # lines in the begining and some dont. I want to read_csv the matrix above into pandas dataframe and want to ignore the rows with # before populating my dataframe. My headers should be the ID SID and AID and so on.....so i think i can read a file by skipping the first 4 rows and i know how to do that. But the problem is there are files where the rows donot have first 4 # rows and directly start with ID SID AID....headers.

When i read in the data frame, i guess it assigns the col name as #PI

Answer 1

The pandas read_csv function allows you to specify a comment character via comment='#' . This will ignore any lines that begin with #.

Answer 2

Why not just read in all rows using read_csv and then filter out lines with # using .loc?

Something like

df.loc[~df['col'].str.startswith('#')]