Reading DBF files from Amazon s3 throwing error - 'int' object has no attribute 'isa

[abeesm]

I am developing a python aws lambda function for migrating dbf files into mysql after reading s3 files. .Lambda function get triggered after every dbf file upload to s3. Here is my code,

 import boto3
 import io from dbfread 
 import DBF s3 = boto3.client('s3')
 obj = s3.get_object(Bucket='XXXXXX', Key='test.dbf')
 f   = io.BytesIO(obj['Body'].read())
 for line in f.readlines():    
     for r in DBF(line,encoding='utf-8'):
         # mysql migration process

but when i am executing the script im getting the below error.
File "E:\Projects\dbf_mysql_migration\dbfread\dbf.py", line 108, in __init__
self.filename = ifind(filename)
File "E:\Projects\dbf_mysql_migration\dbfread\ifiles.py", line 55, in ifind
files = iglob(pat)
File "E:\Projects\dbf_mysql_migration\dbfread\ifiles.py", line 44, in iglob
return glob.glob(ipat(pat))
File "E:\Projects\dbf_mysql_migration\dbfread\ifiles.py", line 24, in ipat
if c.isalpha:
AttributeError: 'int' object has no attribute 'isalpha'

Can you please help me? Is there any better way to read dbf files as streams from s3 .