Concatenate multiple files into a single file object without creating a new file

Question

This question is related to Python concatenate text files

I have a list of file_names, like [\'file1.txt\', \'file2.txt\', ...].

I wou

Answer 1

try something along this lines:

def read_files(*filenames):
    for filename in filenames:
        with open(filename,'r') as file_obj:
            for line in file_obj:
                yield line

you can call it with

for line in read_files("f1.txt", "f2.txt", "f3.txt"):
    #... do whatever with the line

or

filenames = ["f1.txt", "f2.txt", "f3.txt"]
for line in read_files(*filenames):
    #... do whatever with the line