import requests
import json
import matplotlib.pyplot as plt
import io

image_buffer = io.BytesIO()
plt.plot([1,2,3]) #Draw a line graph
plt.savefig(image_buffer, format='jpeg') #Export here

token = '<Get the Typetalk bot token and assign it>'
topic_id = '<Substitute the topic ID posted by Typetalk>'

#URL for sending a message
message_url = f"https://typetalk.com/api/v1/topics/{topic_id}?typetalkToken={token}"

#URL for file upload
upload_file_url = f'https://typetalk.com/api/v1/topics/{topic_id}/attachments?typetalkToken={token}'

files = {'file': ('line.jpeg', image_buffer.getvalue(), 'image/jpeg')}

upload_file_result = requests.post(upload_file_url, files=files)

#Confirmation of execution
print(upload_file_result.status_code)
print(upload_file_result.content)

fileKey = json.loads(upload_file_result.content)['fileKey']

message_result = requests.post(url_message, {'message': 'Today's result!', 'fileKeys[0]': fileKey})

#Confirmation of execution
print(message_result.status_code)
print(message_result.content)

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