python - How to row wise append two .csv files without using pandas

Question

I want to append two .csv files with the same number/names of columns and save the ouput file. However I don't want to use pandas concat nor pandas read_csv. Is there a way to achieve this using pure python 'with open'?

question from:https://stackoverflow.com/questions/65849368/how-to-row-wise-append-two-csv-files-without-using-pandas

Answer 1

Something like this should work:

# read first file
with open('file1.csv', 'r') as txt:
    lines = txt.readlines()

# extend the list with the lines from the second file
with open('file2.csv', 'r') as txt:
    lines.extend(txt.readlines())

# remove 
 from the end of each line
lines = [line.strip() for line in lines]