import csv
data = open('_chat.txt').readlines()
timestamps=[e[:17] for e in data]
text_unparsed =[e[19:] for e in data]
namen = [e.split(':')[0] for e in text_unparsed]
text = [":".join(e.split(':')[1:]) for e in text_unparsed]
output = zip(timestamps,namen,text)
with open('output.csv',mode='w') as fo:
writer=csv.writer(fo)
writer.writerows(output)
'''
zie ook mail. oplossing: