I`m trying to handle the exception 'ProfileNotExistsException' and the code is as follows:

    try:
        profile = instaloader.Profile.from_username(bot.context, followees[i])
        #Other statements
    except ProfileNotExistsException:
        print('exception')

But This NameError is occurring.

NameError                                 Traceback (most recent call last)
Input In [11], in <cell line: 2>()
      6     allfolloweesDataList.append((profile.userid,profile.username,profile.full_name,profile.followers,profile.followees,profile.is_verified,profile.biography,profile.external_url))
      7     print(i,end=',')
----> 8 except ProfileNotExistsException:
      9     print('exception')

NameError: name 'ProfileNotExistsException' is not defined

How can I define a name for an exception like this?

CodePudding user response：

Looking at the source code for the instaloader package, I believe this is what you are looking for:

from instaloader.exceptions import ProfileNotExistsException

try:
    profile = instaloader.Profile.from_username(bot.context, followees[i])
    ...
except ProfileNotExistsException:
    print('exception')

• instaloader.exceptions
• instaloader.exceptions.ProfileNotExistsException

CodePudding user response：

Your question is not clear enough. There are three options.

I. You don't have such an existing class

class ProfileNotExistsException(ValueError):
    def __init__(self):
        pass
    def __str__(self) -> str:
        return 'Profile doesn\'t exist!'

You need to create such a class, and based on its name, it should extend ValueError. Then you can catch it.

II. There is such a class

Just import it, or in your case it might be instaloader.ProfileNotExistsException

III. You actually don't want to catch only this exception

Use

try:
    pass #...
except BaseException: # ValueError IndexError...
    pass #...

CodePudding user response：

Thanks to all the contributors. The real problem was that the exception 'ProfileNotExistsException' was not defined in the code. We can handle the common exceptions easily as they are already defined check the list of a built-in exceptions.

So, If the exception is not the one from the built-in exceptions, we have to define this exception in our code before calling it. Thanks