为什么将excel文件作为zip文件上传？

Question

I have an excel sheet called last_run.xlsx , and I use a small python code to upload it on slack, as follow:

import os
import slack

token= XXX
client = slack.WebClient(token=slack_token)

response = client.files_upload(
        channels="@viktor",
        file="last_run.xlsx")

But when I receive it on slack it is a weird zip file and not an excel file anymore... any idea what I do wrong?

Answer 1

Excel files are actually zipped collection of XML documents. So it appears that the automatic file detection of Slack is recognizing it as ZIP file for that reason.

Also manually specified xlsx as filetype does not change that behavior.

What works is if you also specify a filename . Then it will be correctly recognized and uploaded as Excel file.

Code:

import os
import slack

client = slack.WebClient(token="MY_TOKEN")

response = client.files_upload(
        channels="@viktor",
        file="last_run.xlsx",
        filename="last_run.xlsx")

This looks like a bug in the automatic to me, so I would suggest to submit a bug report to Slack about this behavior.