SimpleMoney email reading code

emails.py

def get_gmail_messages_ind(access_token):
	authorization = "Bearer "+access_token
	headers = {'Authorization': authorization}
	end_date = datetime.date.today() + datetime.timedelta(days=1)
	end_date = date_tomorrow.strftime('%Y/%m/%d')

	start_date = datetime.date.today() - datetime.timedelta(days=730)
	start_date = date_yesterday.strftime('%Y/%m/%d')
  
  # Getting the messages from RTAs, AMCs and depositories:
	query = '{from:cams from:camsonline from:karvy from:sundaram from:sundarammutual from:franklin from:nsdl from:cdslstatement from:principalindia from:quantum from:edelweiss from:nse from:bse} after:'+date_yesterday+" before:"+date_tomorrow
	params = {'q': query}
	url = 'https://www.googleapis.com/gmail/v1/users/' + "me" + '/messages'
	r = requests.get(url,headers=headers, params=params)

	try:
		message_list = r.json()['messages']
	except KeyError:
		# This indicates that no messages were downloaded
		return False

	for message in message_list:
		message_url = url + '/'+message['id']
		r2 = requests.get(message_url,headers=headers)
		payload_headers = r2.json()['payload']['headers']

		snippet = r2.json()['snippet']

		if ("No transactions have been done during" in snippet):
			# This means no transactions were found.
			return False

		# For the attachments:
		try:
			parts = r2.json()['payload']['parts']
		except KeyError:
			# Indicating that there were no attachments
			continue

		for part in parts:
			if part['filename']!="":
				# This requests all the attachments in the current message:
				attachment_id = part['body']['attachmentId']
				attachment_url = message_url+'/attachments/'+attachment_id
				r3 = requests.get(attachment_url, headers=headers)
				resp = r3.json()
				
				# Parsing the data and writing as a PDF:
				file_data = base64.urlsafe_b64decode(resp['data'].encode('UTF-8'))
				path = './pdf_results/'+part['filename']
				f = open(path,'w')
				f.write(file_data)
				f.close()
			
				send_to_queue(path)

	# This means all the messages were looped through unssuccessfully:
	return False