in scripts/xcresult_logs.py [0:0]
def cat_files(files, output):
"""Reads the contents of all the files and copies them to the output.
Args:
files: A list of filenames
output: A file-like object in which all the data should be copied.
"""
for file in files:
with open(file, 'r') as fd:
shutil.copyfileobj(fd, output)