This code logs into my Librus and imports the exams into my Google Calendar, however I noticed it only does it for the current month instead of just any upcoming exams. Can you help me? import pytz import librus from librus import LibrusSession from datetime import datetime, timedelta from googleapiclient.discovery import build from httplib2 import Http from oauth2client import file, client, tools import json def __init__(self, login, password): self.login = login self.password = password class Librus(LibrusSession): exams = [] ignored_subjects = ['Język francuski', 'Religia'] # Add the subjects you want to skip def __init__(self, login, password): self.login(login, password) for exam in self.list_exams(): if exam.subject not in self.ignored_subjects: # Only add the exam if the subject is not in the ignored_subjects list self.exams.append( self.generate_body( exam.date, exam.category, exam.subject, exam.specification, exam.lesson, ) ) def generate_body(self, date, category, subject, specification, lesson): date_object = datetime.strptime(date, "%Y-%m-%d") date_object = pytz.timezone('Europe/Warsaw').localize(date_object) # localize the datetime object start_date = date_object.isoformat() end_date = (date_object + timedelta(hours=1)).isoformat() return { 'summary': f'{category}: {subject}', 'description': f'Specification: {specification}, Lesson: {lesson}', 'start': { 'dateTime': start_date, 'timeZone': 'Europe/Warsaw', }, 'end': { 'dateTime': end_date, 'timeZone': 'Europe/Warsaw', } } class Calendar(): def __init__(self): self.SCOPE = 'https://www.googleapis.com/auth/calendar' self.store = file.Storage('token.json') self.creds = self.store.get() if not self.creds or self.creds.invalid: self.flow = client.flow_from_clientsecrets( 'credentials.json', self.SCOPE) self.creds = tools.run_flow(self.flow, self.store) self.service = build( 'calendar', 'v3', http=self.creds.authorize( Http())) def add_exam(self, body): # Get list of events for the time range of the exam events_result = self.service.events().list(calendarId='primary', timeMin=body['start']['dateTime'], timeMax=body['end']['dateTime']).execute() events = events_result.get('items', []) if not events: # If no existing event is found, add the exam self.service.events().insert(calendarId='primary', body=body).execute() if __name__ == "__main__": l = Librus(login='9732283u', password='Lena2006') cal = Calendar() for exam in l.exams: if not cal.service.events().list(calendarId='primary', timeMin=exam['start']['dateTime'], timeMax=exam['end']['dateTime']).execute()['items']: cal.add_exam(exam)

You are not using the correct syntax for the datetime object. You are using the strptime() function, which is used to parse a string into a datetime object. You are passing in a datetime object, so you should be using the datetime.strptime() function instead.
datetime.strptime('2015-12-01', '%Y-%m-%d')

You