0.53.2 release; fix cache bug

Author: yoelcortes

setup.py

@@ -11,7 +11,7 @@
     name='thermosteam',
     packages=['thermosteam'],
     license='MIT',
-    version='0.53.1',
+    version='0.53.2',
     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__ = "0.53.1"
+__version__ = "0.53.2"
 
 from . import thermo
 del thermo

thermosteam/utils/variable_assignment_inference.py

@@ -64,7 +64,7 @@ def infer_variable_assignment(caller):
         variable_cache = None if lines is None else {}
         cache[filename] = lines, variable_cache, crossout
         if cache.__len__() > max_filecache:
-            cache.popitem(cache.__iter__().__next__())
+            del cache[cache.__iter__().__next__()]
     if lines is None: return default
     n = frame.f_lineno - 1
     if n in variable_cache: