concatenation of two or more base64 strings in python

问题

I'm tring to concatenate two strings encoded to base64 but it doesn't really work, just prints the first string in concatanation:

q = base64.b64encode("StringA")
print q # prints an encoded string
q = q+base64.b64encode("StringB")
print q # prints an encoded string

print base64.b64decode(q) # just prints "StringA"

回答1:

You are decoding a string that is concatenation of two base64 strings. This is not correct. You should do something like this -

base64.b64decode(base64.b64encode("StringA" + "StringB"))

回答2:

This works:

>>> ''.join([base64.b64encode("StringA"), base64.b64encode("StringB")])
'U3RyaW5nQQ==U3RyaW5nQg=='

来源：https://stackoverflow.com/questions/37278521/concatenation-of-two-or-more-base64-strings-in-python