使用Twilio官方示例代码发送SMS出现KeyError问题求助

Hey there, let's break down what's going wrong here and fix it step by step!

The Root Cause of the KeyError #

That error is happening because you're using your full Twilio Account SID (ACa30b8fa59e7eba0e6dc5dbedaf5e8fcb) as the name of the environment variable you're trying to read with os.environ[]. But your system doesn't have an environment variable with that long SID as its name—so Python can't find it and throws a KeyError.

Step 1: Set Up Your Environment Variables Correctly #

First, you need to create environment variables that store your Twilio credentials. Let's use clear, standard names for these:

• For macOS/Linux (run these in your terminal before executing your script):

  export TWILIO_ACCOUNT_SID="ACa30b8fa59e7eba0e6dc5dbedaf5e8fcb"
  export TWILIO_AUTH_TOKEN="Your-Redacted-Auth-Token-Here"
  

• For Windows Command Prompt:

  set TWILIO_ACCOUNT_SID=ACa30b8fa59e7eba0e6dc5dbedaf5e8fcb
  set TWILIO_AUTH_TOKEN=Your-Redacted-Auth-Token-Here
  

• If you're using an IDE like PyCharm or VS Code, you can add these environment variables directly in your run configuration settings instead of using the terminal.

Step 2: Update Your Code to Use the Correct Variable Names #

Now modify your script to read from the environment variables you just set up:

# Download the helper library from https://www.twilio.com/docs/python/install
import os
from twilio.rest import Client

# Your Account Sid and Auth Token stored as environment variables
account_sid = os.environ['TWILIO_ACCOUNT_SID']
auth_token = os.environ['TWILIO_AUTH_TOKEN']
client = Client(account_sid, auth_token)

message = client.messages \
    .create(
         body="What is up Med",
         from_='+Your-Twilio-Phone-Number',
         to='+Your-Target-Phone-Number'
     )

print(message.sid)

Quick Extra Checks to Ensure Success #

• If you're using a Twilio trial account, make sure both your from_ number (the Twilio number) and to number are verified in your Twilio console.
• Double-check that you copied your Auth Token correctly—no extra spaces or missing characters.
• To confirm your environment variables are set properly, you can add a quick print statement before initializing the Client:

  print("Account SID:", os.environ.get('TWILIO_ACCOUNT_SID'))
  

  If this prints your correct SID, you know the environment variable is working.

内容的提问来源于stack exchange，提问作者Alex Kopels