[ Python 常見問題 ] Convert string to binary in python

Source From Here 
Question 
I am in need of a way to get the binary representation of a string in python. e.g. 

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1. st = "hello world"  
2. toBinary(st)  

Is there a module of some neat way of doing this? 

How-To 
You can leverage built-in functions ord, bytearray and format: 

>>> str = "hello world" 
>>> ' '.join(format(ord(x), 'b') for x in str) 
'1101000 1100101 1101100 1101100 1101111 100000 1110111 1101111 1110010 1101100 1100100' 
>>> ' '.join(format(x, 'b') for x in bytearray(str)) 
'1101000 1100101 1101100 1101100 1101111 100000 1110111 1101111 1110010 1101100 1100100'