python是否相当于Javascript的'btoa'

Question

I'm trying to find an exact equivalent to javascript's function 'btoa', as I want to encode a password as base64. It appears that there are many options however, as listed here:

https://docs.python.org/3.4/library/base64.html

Is there an exact equivalent to 'btoa' in python?

Answer 1

Python's Base64 :

import base64

encoded = base64.b64encode('Hello World!')
print encoded

# value of encoded is SGVsbG8gV29ybGQh

Javascript's btoa :

var str = "Hello World!";
var enc = window.btoa(str);

var res = enc;

// value of res is SGVsbG8gV29ybGQh

As you can see they both produce the same result.

Answer 2

I tried the python code and got (with python3) TypeError: a bytes-like object is required, not 'str'

When I added the encode it seems to work

import base64

dataString = 'Hello World!'
dataBytes = dataString.encode("utf-8")
encoded = base64.b64encode(dataBytes)

print(encoded)  # res=> b'SGVsbG8gV29ybGQh'