AttributeError: 'module' object has no attribute 'ValueError'

Question

So I was having issues with errors using the tld library where it didn't know how to handle certain proxy request urls. To fix this a few exceptions were added and it worked for a particular days worth of data.

import tld
from tld import get_fld

#Custom try-except function to handle IPs and garbage http requests
def try_get_fld(x):
    try: 
        return get_fld(x)
    except tld.exceptions.TldBadUrl: 
        return np.nan
    except tld.exceptions.TldDomainNotFound:
        return np.nan

#Apply the function above to the request dataframe
request['flds'] = request['request'].apply(try_get_fld)

But on a different day I ran into a new error:

ValueError: Invalid IPv6 URL

So I added to the exceptions:

def try_get_fld(x):
    try: 
        return get_fld(x)
    except tld.exceptions.TldBadUrl: 
        return np.nan
    except tld.exceptions.TldDomainNotFound:
        return np.nan
    except tld.exceptions.ValueError:
        return np.nan

Then I ran into an Attribute error:

AttributeError: 'module' object has no attribute 'ValueError'

So I added that to the exceptions:

def try_get_fld(x):
    try: 
        return get_fld(x)
    except tld.exceptions.TldBadUrl: 
        return np.nan
    except tld.exceptions.TldDomainNotFound:
        return np.nan
    except tld.exceptions.ValueError:
        return np.nan
    except tld.exceptions.AttributeError:
        return np.nan

Then I get the AttributeError: 'module' object has no attribute 'ValueError' again.

Does anybody know what I'm doing wrong or how to fix my issue? The goal is just to mark the request urls with NaN so that I can apply the method to my dataset.

Just use except ValueError, it's a base Python Error class. — andrew_reece
– andrew_reece, Commented Dec 5, 2018 at 20:09

cs95 · Accepted Answer · 2018-12-05 20:32:12Z

3

You can specify a list of exceptions, make your code concise.

def try_get_fld(x):
    try: 
        return get_fld(x)
    except (tld.exceptions.TldBadUrl, 
            tld.exceptions.TldDomainNotFound, 
            ValueError): 
        return np.nan

answered Dec 5, 2018 at 20:32

cs95

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Addison Lynch · Accepted Answer · 2018-12-05 20:23:18Z

1

This is because ValueError is a Python built-in exception, not a member of tld. Use except ValueError instead of tld.exceptions.ValueError.

answered Dec 5, 2018 at 20:23

Addison Lynch

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