Python Traceback: Key Error

Question

I've been learning how to use Python and Slack for my class project. I'm particularly working on slack threads so I can direct message my entire class.

import os
from slackclient import SlackClient

slack_token = os.environ["xoxb-restofapitoken"]
sc = SlackClient(slack_token)

sc.api_call(
"chat.postMessage",
channel="#general",
text="Hello from Python! :tada:",
thread_ts="1476746830.000003",
reply_broadcast=True

)

When I run the code, the error below shows.

Traceback (most recent call last):
File "chat1.py", line 4, in <module>
slack_token = os.environ["xoxb-restofapitoken"]
File "/home/ubuntu/starterbot/lib/python2.7/UserDict.py", line 40, in __getitem__
  raise KeyError(key)
KeyError: 'xoxb-restofapitoken'

What am I doing wrong?

It looks like the environment variable doesn't exist. Are you sure it does? What's the result of `echo $xoxb-restofapitoken` ? — Sudheesh Singanamalla, Nov 19 '17 at 03:39
@SudheeshSinganamalla, now it's showing `AttributeError: _Environ instance has no __call__ method` — thenewcoder, Nov 19 '17 at 03:46
For starters, you could print all the keys in `os.environ` and check if the required key exists. For example, if you put your slack token in a variable by doing `export SLACK_TOKEN='xoxb-restofapitoken'` you should access it by doing `os.environ['SLACK_TOKEN']`. Currently the key error says that the slack token isn't available on your OS Environment variables. — Sudheesh Singanamalla, Nov 19 '17 at 03:51
@SudheeshSinganamalla I've exported the token already. Is naming a possible error? — thenewcoder, Nov 19 '17 at 03:53
Can you share the command with which you exported the token? — Sudheesh Singanamalla, Nov 19 '17 at 03:54
@SudheeshSinganamalla, Sure. I used `export SLACK_BOT_TOKEN='xoxb-restofapitoken'` — thenewcoder, Nov 19 '17 at 04:03
Then `slack_token = os.environ["xoxb-restofapitoken"]` should be `slack_token = os.environ["SLACK_BOT_TOKEN"]` This is exactly what I explained in the previous comment. — Sudheesh Singanamalla, Nov 19 '17 at 04:05
@SudheeshSinganamalla Maybe I'm just confused, but that's what I have but I replaced it with my token. What am I missing? — thenewcoder, Nov 19 '17 at 04:09
You shouldn't replace it with your token, as it's just the name of the variable which holds the token, not its value. So do `export SLACK_BOT_TOKEN="your-api-token"` before you run your script and in your script replace the line with `slack_token = os.environ["SLACK_BOT_TOKEN"]`. — Dunedan, Nov 19 '17 at 07:16

score 2 · Answer 1 · answered Feb 28 '18 at 15:53

I've met similar error before. There is nothing wrong with your code. However, kindly follow Slack's guideline when you are using test tokens , "pass tokens in as environment variables".

Change the code to:

import os
from slackclient import SlackClient

slack_token = os.environ["SLACK_BOT_TOKEN"]
sc = SlackClient(slack_token)

sc.api_call(
"chat.postMessage",
channel="#general",
text="Hello from Python! :tada:",
thread_ts="1476746830.000003",
reply_broadcast=True

)

Run it with:

SLACK_BOT_TOKEN="xoxb-restofapitoken" python myapp.py

and you should be good to go.

Python Traceback: Key Error

1 Answers1