0.49.2 release

setup.py

@@ -11,7 +11,7 @@
     name='thermosteam',
     packages=['thermosteam'],
     license='MIT',
-    version='0.49.1',
+    version='0.49.2',
     description="BioSTEAM's Premier Thermodynamic Engine",
     long_description=open('README.rst', encoding='utf-8').read(),
     author='Yoel Cortes-Pena',

thermosteam/__init__.py

@@ -31,7 +31,7 @@
 #     update_module(chemicals, numba)
 # use_numba_chemicals()
 # del use_numba_chemicals
-__version__ = "0.49.1"
+__version__ = "0.49.2"
 
 from . import thermo
 del thermo

thermosteam/_stream.py

@@ -468,6 +468,27 @@ def scale(self, scale):
         self._imol.data *= scale
     rescale = scale
 
+    def reset(self, T=None, P=None, **flows):
+        """
+        Convinience method for resetting flow rate and thermal condition data.
+        
+        Examples
+        --------
+        >>> import thermosteam as tmo
+        >>> tmo.settings.set_thermo(['Water', 'Ethanol'], cache=True)
+        >>> s1 = tmo.Stream('s1', Water=1)
+        >>> s1.reset(T=300.1, Ethanol=1, phase='g', units='kg/hr', total_flow=2)
+        >>> s1.show('cwt')
+        Stream: s1
+        phase: 'g', T: 300.1 K, P: 101325 Pa
+        composition (%): Ethanol  100
+                         -------  2 kg/hr
+        
+        """
+        self.reset_flow(**flows)
+        if T is not None: self.T = T
+        if P is not None: self.P = P
+
     def reset_flow(self, phase=None, units=None, total_flow=None, **chemical_flows):
         """
         Convinience method for resetting flow rate data.

thermosteam/network.py

@@ -2080,7 +2080,10 @@ def unmark_disjunction(stream):
         disjunctions.remove(port)
 
 def feed_complexity(stream):
-    return stream.F_mass * (stream.mol != 0).sum()** 2
+    if hasattr(stream, 'mol'):
+        return stream.F_mass * (stream.mol != 0).sum()** 2
+    else:
+        return stream.F_mass
 
 def sort_feeds_big_to_small(feeds):
     if feeds: