getting bytes from unicode string in python

Here are a variety of different ways you may want it.

Python 2:

>>> chars = u'\u4132'.encode('utf-16be')
>>> chars
'A2'
>>> ord(chars[0])
65
>>> '%x' % ord(chars[0])
'41'
>>> hex(ord(chars[0]))
'0x41'
>>> ['%x' % ord(c) for c in chars]
['41', '32']
>>> [hex(ord(c)) for c in chars]
['0x41', '0x32']

Python 3:

>>> chars = '\u4132'.encode('utf-16be')
>>> chars
b'A2'
>>> chars = bytes('\u4132', 'utf-16be')
>>> chars  # Just the same.
b'A2'
>>> chars[0]
65
>>> '%x' % chars[0]
'41'
>>> hex(chars[0])
'0x41'
>>> ['%x' % c for c in chars]
['41', '32']
>>> [hex(c) for c in chars]
['0x41', '0x32']

• Java: "\u4132".getBytes("UTF-16BE")
• Python 2: u'\u4132'.encode('utf-16be')
• Python 3: '\u4132'.encode('utf-16be')

These methods return a byte array, which you can convert to an int array easily. But note that code points above U+FFFF will be encoded using two code units (so with UTF-16BE this means 32 bits or 4 bytes).