Remove the new line "\n" from base64 encoded strings in Python3?

For Python 3 use:

binascii.b2a_base64(cipher_text, newline=False)

For Python 2 use:

binascii.b2a_base64(cipher_text)[:-1]

Following code would work

auth_base64 = auth_base64.decode('utf-8').replace('\n', '')

Instead of encodestring consider using b64encode. Later does not add \n characters. e.g.

In [11]: auth = b'[email protected]:passWORD'

In [12]: base64.encodestring(auth)
Out[12]: b'dXNlcm5hbWVAZG9tYWluLmNvbTpwYXNzV09SRA==\n'

In [13]: base64.b64encode(auth)
Out[13]: b'dXNlcm5hbWVAZG9tYWluLmNvbTpwYXNzV09SRA=='

It produces identical encoded string except the \n