Python strings are all unicode everywhere, even python 27.

Signed-off-by: Ian Bell <ian.h.bell@gmail.com>

wrappers/Python/CoolProp/CoolProp.pxd

@@ -5,16 +5,6 @@ cimport cython
 from libcpp.vector cimport vector
 
 include "AbstractState.pxd"
-
-# Default string in Python 3.x is a unicode string (type str)
-# Default string in Python 2.x is a byte string(type bytes) 
-#
-# Create a fused type that allows for either unicode string or bytestring
-# We encode unicode strings using the ASCII encoding since we know they are all
-# ASCII strings 
-ctypedef fused string_like:
-    cython.bytes
-    cython.unicode
     
 cdef extern from "CoolPropTools.h" namespace "CoolProp":
     bint _ValidNumber "ValidNumber"(double)

wrappers/Python/CoolProp/CoolProp.pyx

@@ -1,4 +1,4 @@
-#cython: embedsignature = True, c_string_type=bytes, c_string_encoding=ascii
+#cython: embedsignature = True, c_string_type = unicode, c_string_encoding = ascii
 from __future__ import division
 #
 # This file provides wrapper functions of all the CoolProp functions
@@ -13,7 +13,7 @@ import math
 import warnings
 
 try:
-    import numpy as np
+    import numpy as npp
     _numpy_supported = True
 except ImportError:
     _numpy_supported = False
@@ -202,14 +202,14 @@ cpdef list FluidsList():
        In [1]: FluidsList()
        
     """ 
-    return _get_global_param_string("FluidsList").decode('ascii').split(',')
+    return _get_global_param_string("FluidsList").split(',')
 
 cpdef get_aliases(string Fluid):
     """
     Return a comma separated string of aliases for the given fluid
     """
     cdef bytes _Fluid = Fluid.encode('ascii')
-    return [F.encode('ascii') for F in (_get_fluid_param_string(_Fluid,'aliases').encode('ascii')).decode('ascii').split(',')]
+    return [F for F in _get_fluid_param_string(_Fluid, 'aliases').split(',')]
 
 cpdef string get_REFPROPname(string Fluid):
     """
@@ -251,6 +251,7 @@ cpdef string get_REFPROPname(string Fluid):
 #          empty string if Fluid not in CoolProp, "Bad key" if key is invalid
 #     """
 #     return _get_BibTeXKey(Fluid, key)
+
 cpdef string get_errstr():
     """
     Return the current error string

wrappers/Python/CoolProp/__init__.py

@@ -6,11 +6,11 @@ from . import HumidAirProp
 from . import State
 from .constants import *
 
-__fluids__ = CoolProp.get_global_param_string('fluids_list').decode('ascii').split(',')
-__incompressibles_pure__ = CoolProp.get_global_param_string('incompressible_list_pure').decode('ascii').split(',')
-__incompressibles_solution__ = CoolProp.get_global_param_string('incompressible_list_solution').decode('ascii').split(',')
-__version__ = CoolProp.get_global_param_string('version').decode('ascii')
-__gitrevision__ = CoolProp.get_global_param_string('gitrevision').decode('ascii')
+__fluids__ = CoolProp.get_global_param_string('fluids_list').split(',')
+__incompressibles_pure__ = CoolProp.get_global_param_string('incompressible_list_pure').split(',')
+__incompressibles_solution__ = CoolProp.get_global_param_string('incompressible_list_solution').split(',')
+__version__ = CoolProp.get_global_param_string('version')
+__gitrevision__ = CoolProp.get_global_param_string('gitrevision')
 
 def get(s):
     """