Can this support loop through the records

[kmrsh]

I know most ASN.1 libraries can decode the byte stream and populate the given record type. But in most cases one file could contain thousands of such records one after another. Can this library used to decode each record in turn. Another reason for this question is sometimes between two records there can be several bytes with 0 value (which I don't know exactly why, but I've seen in certain telco related data files). Is there a way to skip through these 0 value bytes and decode any valid records.
Thank you

[russhousley]

You might be able to do something like this ...

from pyasn1.codec.der.decoder import decode as der_decode

bin_file = open("test.bin", "rb")
substrate = bin_file.read()
bin_file.close()

substrate = substrate.lstrip(b'\x00')
while substrate:
    asn1Object, rest = der_decode(substrate, asn1Spec=asn1Spec)
    print(asn1Object.prettyPrint())
    substrate = rest.lstrip(b'\x00')

[ahmedelhaw]

The padding zeros are for fixed block BER files.