title: Pyasn1 how do decoder.decode works?
body: <p>I have this little part of code:</p>
  
  <pre><code>from pyasn1.type import univ
  from pyasn1.codec.ber import decoder
  
  decoder.decode(binary_file.read(5))
  </code></pre>
  
  <p>my binary_file variable it's a particular binary file encoded (CDR)</p>
  
  <p>if i try to decode the readed part it gives me this error:</p>
  
  <pre><code>pyasn1.error.PyAsn1Error: [128:0:0]+[128:32:79] not in asn1Spec: None
  </code></pre>
  
  <p>how can i fix?</p>