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import io
import csv
import operator
from itertools import groupby

DATA="""Do, 12.04.2018, 08:00:00; xxx
Do, 12.04.2018, 09:00:00; ccc
Do, 12.04.2018, 10:00:00; FEIERABEND
Fr, 13.04.2018, 08:00:00; bbb
Fr, 13.04.2018, 09:00:00; rrr
Fr, 13.04.2018, 10:00:00; ccc
Fr, 20.04.2018, 11:00:00; xxx
Fr, 20.04.2018, 12:00:00; MITTAG
Fr, 20.04.2018, 13:00:00; xxx
Fr, 20.04.2018, 14:00:00; FEIERABEND
"""

inf = io.StringIO(DATA)

for key, group in groupby(csv.reader(inf), operator.itemgetter(1)):
    group = list(group)
    if not any("FEIERABEND" in row[-1] for row in group):
        print(key, group)

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    def check_log_datei(self,logdatei):
        status = False
        DATA = ''.join(logdatei)
        inf = io.StringIO(DATA)
        for key, group in groupby(csv.reader(inf), operator.itemgetter(1)):
            group = list(group)
            if not any("FEIERABEND" in row[-1] for row in group):
                wx.MessageBox('Daten inkonsistent.\nBitte überprüfe den Tag:  ' + key, 'Info', wx.OK | wx.ICON_INFORMATION)
                status = False
                break
            else:
                status = True
        return status

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def read_log_file(filename):
    result = []
    with open(filename) as lines:
        for date, job in csv.reader(lines, delimiter=';'):
            result.append((
                datetime.datetime.strptime(date.split(', ', 1)[1], "%d.%m.%Y, %H:%M:%S"),
                job.strip()
            ))
    return result

def check_log_data(data):
    for _, day in groupby(data, lambda x: x[0].date()):
        _, job = list(day)[-1]
        if job != "FEIERABEND":
            return False
    return True