
from json import dumps

from twisted.python.compat import unicode

def dumps_bytes(obj):
    """
    Serialize ``obj`` to JSON formatted ``bytes``.
    """
    b = dumps(obj)
    if isinstance(b, unicode):
        b = b.encode("ascii")
    return b


from json import dumps

from twisted.python.compat import unicode

def dumps_bytes(obj):
    """
    Serialize ``obj`` to JSON formatted ``bytes``.
    """
    b = dumps(obj)
    if isinstance(b, unicode):
        b = b.encode("ascii")
    return b



def native_string_to_bytes(s, encoding="ascii", errors="strict"):
    """
    Ensure that the native string ``s`` is converted to ``bytes``.
    """
    if not isinstance(s, str):
        raise TypeError("{} must be type str, not {}".format(s, type(s)))
    if str is bytes:
        # Python 2
        return s
    else:
        # Python 3
        return s.encode(encoding=encoding, errors=errors)



def native_string_to_unicode(s, encoding="ascii", errors="strict"):
    """
    Ensure that the native string ``s`` is converted to ``unicode``.
    """
    if not isinstance(s, str):
        raise TypeError("{} must be type str, not {}".format(s, type(s)))
    if str is unicode:
        # Python 3
        return s
    else:
        # Python 2
        return s.decode(encoding=encoding, errors=errors)

Add helper methods: 1. for converting from native string to bytes 2. for converting from native string to unicode
Add helper methods:
  1. for converting from native string to bytes
  2. for converting from native string to unicode

  
  from json import dumps
  
  from twisted.python.compat import unicode
  
  def dumps_bytes(obj):
      """
      Serialize ``obj`` to JSON formatted ``bytes``.
      """
      b = dumps(obj)
      if isinstance(b, unicode):
          b = b.encode("ascii")
      return b
  
+ 
+ 
+ def native_string_to_bytes(s, encoding="ascii", errors="strict"):
+     """
+     Ensure that the native string ``s`` is converted to ``bytes``.
+     """
+     if not isinstance(s, str):
+         raise TypeError("{} must be type str, not {}".format(s, type(s)))
+     if str is bytes:
+         # Python 2
+         return s
+     else:
+         # Python 3
+         return s.encode(encoding=encoding, errors=errors)
+ 
+ 
+ 
+ def native_string_to_unicode(s, encoding="ascii", errors="strict"):
+     """
+     Ensure that the native string ``s`` is converted to ``unicode``.
+     """
+     if not isinstance(s, str):
+         raise TypeError("{} must be type str, not {}".format(s, type(s)))
+     if str is unicode:
+         # Python 3
+         return s
+     else:
+         # Python 2
+         return s.decode(encoding=encoding, errors=errors)
+ 
Add helper methods: 1. for converting from native string to bytes 2. for converting from native string to unicode
## Code Before:

from json import dumps

from twisted.python.compat import unicode

def dumps_bytes(obj):
    """
    Serialize ``obj`` to JSON formatted ``bytes``.
    """
    b = dumps(obj)
    if isinstance(b, unicode):
        b = b.encode("ascii")
    return b

## Instruction:
Add helper methods: 1. for converting from native string to bytes 2. for converting from native string to unicode
## Code After:

from json import dumps

from twisted.python.compat import unicode

def dumps_bytes(obj):
    """
    Serialize ``obj`` to JSON formatted ``bytes``.
    """
    b = dumps(obj)
    if isinstance(b, unicode):
        b = b.encode("ascii")
    return b



def native_string_to_bytes(s, encoding="ascii", errors="strict"):
    """
    Ensure that the native string ``s`` is converted to ``bytes``.
    """
    if not isinstance(s, str):
        raise TypeError("{} must be type str, not {}".format(s, type(s)))
    if str is bytes:
        # Python 2
        return s
    else:
        # Python 3
        return s.encode(encoding=encoding, errors=errors)



def native_string_to_unicode(s, encoding="ascii", errors="strict"):
    """
    Ensure that the native string ``s`` is converted to ``unicode``.
    """
    if not isinstance(s, str):
        raise TypeError("{} must be type str, not {}".format(s, type(s)))
    if str is unicode:
        # Python 3
        return s
    else:
        # Python 2
        return s.decode(encoding=encoding, errors=errors)
