使用pexpect和spawn远程SSH报错：TypeError: 'module' object is not callable

Hey there, this error is super common when folks mix up how to import pexpect's spawn functionality. Let me break down what's going on and how to fix it:

What's causing the error? #

You're seeing this because you've imported spawn as a module instead of the callable class/function that handles the SSH connection. Pexpect's spawn lives inside the main pexpect module, not as a standalone module you can import directly.

Correct Ways to Import & Use spawn #

Here are the two valid approaches to get spawn working:

1. Import the entire pexpect module, then call spawn

import pexpect

# Initialize the SSH connection
child = pexpect.spawn('ssh your_username@remote_host_ip')

# Example: Handle password prompt
child.expect('password:')
child.sendline('your_remote_password')

2. Directly import spawn from pexpect

from pexpect import spawn

# Initialize the SSH connection
child = spawn('ssh your_username@remote_host_ip')

# Example: Handle key-based auth prompts (if needed)
child.expect('Are you sure you want to continue connecting (yes/no)?')
child.sendline('yes')

What you might have done wrong #

If you wrote something like this, you're importing the spawn sub-module (not the callable) which causes the error:

# Wrong! This imports the module, not the callable class
import pexpect.spawn
child = pexpect.spawn('ssh user@host')  # pexpect.spawn is a module, can't call it

Quick Extra Tips #

• Make sure pexpect is installed correctly: run pip install pexpect if you haven't already
• For Python 3, pexpect is fully compatible—no extra steps needed
• When handling SSH, always account for prompts like password requests or host key verification (the examples above cover common cases)

内容的提问来源于stack exchange，提问作者Akshay Bhaskaran