def merge_files(files1, files2):
	ids = []
	files = []
	for f in files1 + files2:
		if ids not in f['id']:
			files.append(f)
			ids.append(f['id'])
	return files
dataset/ETHPy150Open iambus/xunlei-lixian/lixian_query.py/merge_files/swapped operands of `not in`