Take individual feature .csv files from mhealthx and output a combined feature table

combine_features.py

"""
Combine feature extraction output .csv files
"""
import csv
import os

dir = "/home/ubuntu/mhealthx_output/feature_tables/voice_openSMILE-2.2rc1_gemaps"
data=[]
for filename in os.listdir(dir):
    print filename
    path = os.path.join(dir, filename)
    with open(path) as f:
        reader = csv.reader(f)
        header = next(reader)
        row = next(reader)
        row[12:] = [float(x) for x in row[12:]]
        row = [a for i,a in enumerate(row) if i not in [0,11]]
        data.append(row)

header = [a for i,a in enumerate(header) if i not in [0,11]]

with open('voice_gemaps.features.csv', 'w') as f:
    writer = csv.writer(f)
    writer.writerow(header)
    for row in data:
        writer.writerow(row)