I am processing the email files from Amazon SES. The email contains a pdf file encoded with base64.
Content-Type: application/octet-stream; name="IN081AKC.pdf"
Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename="IN081AKC.pdf"
encoded_string = “JVBERi0xLjI……………….”
I am trying to decode the string with base64.b64decode(encoded_string) but getting the exception
return base64.b64decode(encoded_string)
File "/usr/local/Cellar/[email protected]/3.9.9/Frameworks/Python.framework/Versions/3.9/lib/python3.9/base64.py", line 87, in b64decode
return binascii.a2b_base64(s)
binascii.Error: Invalid base64-encoded string: number of data characters (12693) cannot be 1 more than a multiple of 4
I checked the padding also, len(encoded_string)%4 = 0
The encoded_string ends with "A===".
If I remove "A===" or add "A==" then I am able to decode the string.
Can we remove "A===" from the end of the string?