small optimization and a fix for python2.7 on travis

.travis.yml

@@ -11,7 +11,7 @@ before_install:
   # coverage submission packages
   - pip install codecov
 install:
-  - if [ "$TRAVIS_PYTHON_VERSION" == "2.7" ]; then pip install pytest coverage pytest-cov; else pip install ".[test]"; fi
+  - if [ "$TRAVIS_PYTHON_VERSION" == "2.7" ]; then pip install pytest coverage pytest-cov .; else pip install ".[test]"; fi
 script: python -m pytest --cov=cachier
 # submit coverage
 after_success:

cachier/pickle_core.py

@@ -66,23 +66,25 @@ class _PickleCore(_BaseCore):
         self.cache = None
         self.reload = reload
 
-    def _get_cache_file_name(self):
-        return '.{}.{}'.format(
-            self.func.__module__, self.func.__name__)  # pylint: disable=W0212
+    def _cache_fname(self):
+        if not hasattr(self, 'cache_fname'):
+            self.cache_fname = '.{}.{}'.format(
+                self.func.__module__, self.func.__name__)
+        return self.cache_fname
 
-    def _get_cache_path(self):
-        # print(EXPANDED_CACHIER_DIR)
-        if not os.path.exists(EXPANDED_CACHIER_DIR):
-            os.makedirs(EXPANDED_CACHIER_DIR)
-        fpath = os.path.abspath(os.path.join(
-            os.path.realpath(EXPANDED_CACHIER_DIR),
-            self._get_cache_file_name()
-        ))
-        # print(fpath)
-        return fpath
+    def _cache_fpath(self):
+        if not hasattr(self, 'cache_fpath'):
+            # print(EXPANDED_CACHIER_DIR)
+            if not os.path.exists(EXPANDED_CACHIER_DIR):
+                os.makedirs(EXPANDED_CACHIER_DIR)
+            self.cache_fpath = os.path.abspath(os.path.join(
+                os.path.realpath(EXPANDED_CACHIER_DIR),
+                self._cache_fname()
+            ))
+        return self.cache_fpath
 
     def _reload_cache(self):
-        fpath = self._get_cache_path()
+        fpath = self._cache_fpath()
         try:
             with open(fpath, 'rb') as cache_file:
                 fcntl.flock(cache_file, fcntl.LOCK_SH)
@@ -101,7 +103,7 @@ class _PickleCore(_BaseCore):
 
     def _save_cache(self, cache):
         self.cache = cache
-        fpath = self._get_cache_path()
+        fpath = self._cache_fpath()
         with open(fpath, 'wb') as cache_file:
             fcntl.flock(cache_file, fcntl.LOCK_EX)
             pickle.dump(cache, cache_file)
@@ -155,7 +157,7 @@ class _PickleCore(_BaseCore):
         if not entry['being_calculated']:
             return entry['value']
         event_handler = _PickleCore.CacheChangeHandler(
-            filename=self._get_cache_file_name(),
+            filename=self._cache_fname(),
             core=self,
             key=key
         )

tests/speed_eval.py

@@ -0,0 +1,42 @@
+
+from time import time
+
+from cachier import cachier
+
+
+@cachier(next_time=True)
+def _test_int_pickling(int_1, int_2):
+    """Add the two given ints."""
+    return int_1 + int_2
+
+
+def _test_int_pickling_compare(int_1, int_2):
+    """Add the two given ints."""
+    return int_1 + int_2
+
+
+def test_pickle_speed():
+    """Test speeds"""
+    print("Comparing speeds of decorated vs non-decorated functions...")
+    num_of_vals = 100
+    times = []
+    for i in range(1, num_of_vals):
+        tic = time()
+        _test_int_pickling_compare(i, i + 1)
+        toc = time()
+        times.append(toc - tic)
+    print('  - Non-decorated average = {:.8f}'.format(
+        sum(times) / num_of_vals))
+
+    _test_int_pickling.clear_cache()
+    times = []
+    for i in range(1, num_of_vals):
+        tic = time()
+        _test_int_pickling(i, i + 1)
+        toc = time()
+        times.append(toc - tic)
+    print('  - Decorated average = {:.8f}'.format(
+        sum(times) / num_of_vals))
+
+if __name__ == '__main__':
+    test_pickle_speed()

tests/test_cachier.py

@@ -23,41 +23,6 @@ from cachier import cachier
 
 # Pickle core tests
 
-@cachier(next_time=True)
-def _test_int_pickling(int_1, int_2):
-    """Add the two given ints."""
-    return int_1 + int_2
-
-
-def _test_int_pickling_compare(int_1, int_2):
-    """Add the two given ints."""
-    return int_1 + int_2
-
-
-def test_pickle_speed():
-    """Test speeds"""
-    print("    * Comparing speeds of decorated vs non-decorated functions...")
-    num_of_vals = 100
-    times = []
-    for i in range(1, num_of_vals):
-        tic = time()
-        _test_int_pickling_compare(i, i + 1)
-        toc = time()
-        times.append(toc - tic)
-    print('      - Non-decorated average = {:.8f}'.format(
-        sum(times) / num_of_vals))
-
-    _test_int_pickling.clear_cache()
-    times = []
-    for i in range(1, num_of_vals):
-        tic = time()
-        _test_int_pickling(i, i + 1)
-        toc = time()
-        times.append(toc - tic)
-    print('      - Decorated average = {:.8f}'.format(
-        sum(times) / num_of_vals))
-
-
 @cachier(next_time=False)
 def _takes_5_seconds(arg_1, arg_2):
     """Some function."""