except exception?

[kw-andy]

I've created this function

def cre_file_conn(ip_addr,username,priv_keys):
    try:
        cmd = ("ssh -i {} {}{}{}").format(priv_keys,username,"@",ip_addr)
        child = pexpect.spawn(cmd)
        child.expect(username)
        child.sendline('touch 123toto.txt')
        child.expect(username) 
        child.sendline('exit')
    except Exception as e:
        print(str(e))       

The except Exception as e works well. But I was not able to find the mention on the docs.

What is the difference between except Exception as e and except pexpect.EOF as e?

I know that except pexpect.EOF as e will try to catch all EOF. But how about except Exception?

[takluyver]

except Exception catches any Python error (minus a couple of special ones, like KeyboardInterrupt). It's generally not recommended because it makes it harder to debug code when something's going wrong. If pexpect.EOF is the only error that ever comes up, it will achieve the same thing, but it's better to be more specific.

[kw-andy]

Hi @takluyver,

Thank you for your answer.

One last question:

• Is there somewhere in the doc that mentions all the possible exceptions?

Cheers

[takluyver]

The exceptions defined by Pexpect are documented here:
http://pexpect.readthedocs.io/en/stable/overview.html#exceptions

Python's general exceptions are documented here:
https://docs.python.org/3/library/exceptions.html

Of course, other packages can also define their own exception types.

[kw-andy]

Cheers @takluyver