From f6fe86a2203b518aa75bbe73e3eb2c1c6e5b20fe Mon Sep 17 00:00:00 2001
From: neingeist <neingeist@bl0rg.net>
Date: Fri, 29 Aug 2014 21:25:42 +0200
Subject: [PATCH] add a decorator that caches function call results in a json
 file

---
 .idea/dictionaries/orange.xml |   1 +
 .idea/workspace.xml           | 311 +++++++++++++++++++++++++++-------
 json_memoize.py               |  78 +++++++++
 3 files changed, 325 insertions(+), 65 deletions(-)
 create mode 100644 json_memoize.py

diff --git a/.idea/dictionaries/orange.xml b/.idea/dictionaries/orange.xml
index 5bc621f..f7bad05 100644
--- a/.idea/dictionaries/orange.xml
+++ b/.idea/dictionaries/orange.xml
@@ -3,6 +3,7 @@
     <words>
       <w>anki</w>
       <w>matplotlib</w>
+      <w>memoize</w>
     </words>
   </dictionary>
 </component>
\ No newline at end of file
diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index 6a2c036..cc49a16 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -2,11 +2,8 @@
 <project version="4">
   <component name="ChangeListManager">
     <list default="true" id="7ab214b9-b539-4600-9149-e54a1f884b51" name="Default" comment="">
-      <change type="MODIFICATION" beforePath="$PROJECT_DIR$/.idea/codeStyleSettings.xml" afterPath="$PROJECT_DIR$/.idea/codeStyleSettings.xml" />
-      <change type="MODIFICATION" beforePath="$PROJECT_DIR$/least-squares.py" afterPath="$PROJECT_DIR$/least-squares.py" />
-      <change type="MODIFICATION" beforePath="$PROJECT_DIR$/.idea/misc.xml" afterPath="$PROJECT_DIR$/.idea/misc.xml" />
+      <change type="NEW" beforePath="" afterPath="$PROJECT_DIR$/json_memoize.py" />
       <change type="MODIFICATION" beforePath="$PROJECT_DIR$/.idea/dictionaries/orange.xml" afterPath="$PROJECT_DIR$/.idea/dictionaries/orange.xml" />
-      <change type="MODIFICATION" beforePath="$PROJECT_DIR$/.idea/python-exercises.iml" afterPath="$PROJECT_DIR$/.idea/python-exercises.iml" />
       <change type="MODIFICATION" beforePath="$PROJECT_DIR$/.idea/workspace.xml" afterPath="$PROJECT_DIR$/.idea/workspace.xml" />
     </list>
     <list id="22da2c6d-250c-493f-ac9c-eb57568746ab" name="New changelist" comment="" />
@@ -31,13 +28,12 @@
   </component>
   <component name="FileEditorManager">
     <leaf>
-      <file leaf-file-name="least-squares.py" pinned="false" current="true" current-in-tab="true">
-        <entry file="file://$PROJECT_DIR$/least-squares.py">
+      <file leaf-file-name="json_memoize.py" pinned="false" current="true" current-in-tab="true">
+        <entry file="file://$PROJECT_DIR$/json_memoize.py">
           <provider selected="true" editor-type-id="text-editor">
-            <state line="12" column="28" selection-start="329" selection-end="329" vertical-scroll-proportion="0.1744186" vertical-offset="105" max-vertical-offset="690">
-              <folding>
-                <element signature="e#21#68#0" expanded="true" />
-              </folding>
+            <state vertical-scroll-proportion="0.0" vertical-offset="60" max-vertical-offset="1260">
+              <caret line="4" column="8" selection-start-line="4" selection-start-column="8" selection-end-line="4" selection-end-column="8" />
+              <folding />
             </state>
           </provider>
         </entry>
@@ -57,6 +53,12 @@
       <list>
         <option value="$PROJECT_DIR$/anki-sin-cos-table.py" />
         <option value="$PROJECT_DIR$/least-squares.py" />
+        <option value="$PROJECT_DIR$/test-swig.c" />
+        <option value="$PROJECT_DIR$/test-swig.i" />
+        <option value="$PROJECT_DIR$/colorama.py" />
+        <option value="$PROJECT_DIR$/test_colorama.py" />
+        <option value="$PROJECT_DIR$/convex-hull.py" />
+        <option value="$PROJECT_DIR$/json_memoize.py" />
       </list>
     </option>
   </component>
@@ -101,7 +103,7 @@
     <option name="STATE" value="0" />
   </component>
   <component name="ProjectView">
-    <navigator currentView="ProjectPane" proportions="" version="1" splitterProportion="0.5">
+    <navigator currentView="ProjectPane" proportions="" version="1">
       <flattenPackages />
       <showMembers />
       <showModules />
@@ -139,7 +141,7 @@
   <component name="PropertiesComponent">
     <property name="recentsLimit" value="5" />
     <property name="restartRequiresConfirmation" value="true" />
-    <property name="last_opened_file_path" value="$PROJECT_DIR$/least-squares.py" />
+    <property name="last_opened_file_path" value="$PROJECT_DIR$/colorama.py" />
     <property name="LayoutCode.rearrangeEntriesPython" value="false" />
     <property name="options.lastSelected" value="com.jetbrains.python.configuration.PyActiveSdkModuleConfigurable" />
     <property name="options.splitter.main.proportions" value="0.3" />
@@ -152,7 +154,45 @@
       <console-settings />
     </option>
   </component>
-  <component name="RunManager" selected="Python.Unnamed">
+  <component name="RunManager" selected="Python.json_memoize">
+    <configuration default="false" name="convex-hull" type="PythonConfigurationType" factoryName="Python" temporary="true">
+      <option name="INTERPRETER_OPTIONS" value="" />
+      <option name="PARENT_ENVS" value="true" />
+      <envs>
+        <env name="PYTHONUNBUFFERED" value="1" />
+      </envs>
+      <option name="SDK_HOME" value="" />
+      <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$" />
+      <option name="IS_MODULE_SDK" value="true" />
+      <option name="ADD_CONTENT_ROOTS" value="true" />
+      <option name="ADD_SOURCE_ROOTS" value="true" />
+      <module name="python-exercises" />
+      <option name="SCRIPT_NAME" value="$PROJECT_DIR$/convex-hull.py" />
+      <option name="PARAMETERS" value="" />
+      <RunnerSettings RunnerId="PythonRunner" />
+      <ConfigurationWrapper RunnerId="PythonRunner" />
+      <method />
+    </configuration>
+    <configuration default="false" name="json_memoize" type="PythonConfigurationType" factoryName="Python" temporary="true">
+      <option name="INTERPRETER_OPTIONS" value="" />
+      <option name="PARENT_ENVS" value="true" />
+      <envs>
+        <env name="PYTHONUNBUFFERED" value="1" />
+      </envs>
+      <option name="SDK_HOME" value="" />
+      <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$" />
+      <option name="IS_MODULE_SDK" value="true" />
+      <option name="ADD_CONTENT_ROOTS" value="true" />
+      <option name="ADD_SOURCE_ROOTS" value="true" />
+      <module name="python-exercises" />
+      <option name="SCRIPT_NAME" value="$PROJECT_DIR$/json_memoize.py" />
+      <option name="PARAMETERS" value="" />
+      <RunnerSettings RunnerId="PyDebugRunner" />
+      <RunnerSettings RunnerId="PythonRunner" />
+      <ConfigurationWrapper RunnerId="PyDebugRunner" />
+      <ConfigurationWrapper RunnerId="PythonRunner" />
+      <method />
+    </configuration>
     <configuration default="true" type="tests" factoryName="py.test">
       <option name="INTERPRETER_OPTIONS" value="" />
       <option name="PARENT_ENVS" value="true" />
@@ -274,7 +314,7 @@
       <option name="USE_PATTERN" value="false" />
       <method />
     </configuration>
-    <configuration default="false" name="Unnamed" type="PythonConfigurationType" factoryName="Python">
+    <configuration default="false" name="least-squares" type="PythonConfigurationType" factoryName="Python">
       <option name="INTERPRETER_OPTIONS" value="" />
       <option name="PARENT_ENVS" value="true" />
       <envs>
@@ -294,27 +334,63 @@
       <ConfigurationWrapper RunnerId="PythonRunner" />
       <method />
     </configuration>
-    <list size="1">
-      <item index="0" class="java.lang.String" itemvalue="Python.Unnamed" />
+    <configuration default="false" name="test_swig_test" type="PythonConfigurationType" factoryName="Python">
+      <option name="INTERPRETER_OPTIONS" value="" />
+      <option name="PARENT_ENVS" value="true" />
+      <envs>
+        <env name="PYTHONUNBUFFERED" value="1" />
+      </envs>
+      <option name="SDK_HOME" value="/usr/bin/python2.7" />
+      <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$" />
+      <option name="IS_MODULE_SDK" value="false" />
+      <option name="ADD_CONTENT_ROOTS" value="true" />
+      <option name="ADD_SOURCE_ROOTS" value="true" />
+      <module name="python-exercises" />
+      <option name="SCRIPT_NAME" value="$PROJECT_DIR$/test_swig_test.py" />
+      <option name="PARAMETERS" value="" />
+      <RunnerSettings RunnerId="PyDebugRunner" />
+      <RunnerSettings RunnerId="PythonRunner" />
+      <ConfigurationWrapper RunnerId="PyDebugRunner" />
+      <ConfigurationWrapper RunnerId="PythonRunner" />
+      <method>
+        <option name="ToolBeforeRunTask" enabled="true" actionId="Tool_make" />
+      </method>
+    </configuration>
+    <configuration default="false" name="colorama" type="PythonConfigurationType" factoryName="Python" singleton="true">
+      <option name="INTERPRETER_OPTIONS" value="" />
+      <option name="PARENT_ENVS" value="true" />
+      <envs>
+        <env name="PYTHONUNBUFFERED" value="1" />
+      </envs>
+      <option name="SDK_HOME" value="/usr/bin/python2.7" />
+      <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$" />
+      <option name="IS_MODULE_SDK" value="false" />
+      <option name="ADD_CONTENT_ROOTS" value="true" />
+      <option name="ADD_SOURCE_ROOTS" value="true" />
+      <module name="python-exercises" />
+      <option name="SCRIPT_NAME" value="$PROJECT_DIR$/test_colorama.py" />
+      <option name="PARAMETERS" value="" />
+      <RunnerSettings RunnerId="PythonRunner" />
+      <ConfigurationWrapper RunnerId="PythonRunner" />
+      <method />
+    </configuration>
+    <list size="5">
+      <item index="0" class="java.lang.String" itemvalue="Python.least-squares" />
+      <item index="1" class="java.lang.String" itemvalue="Python.test_swig_test" />
+      <item index="2" class="java.lang.String" itemvalue="Python.colorama" />
+      <item index="3" class="java.lang.String" itemvalue="Python.convex-hull" />
+      <item index="4" class="java.lang.String" itemvalue="Python.json_memoize" />
     </list>
+    <recent_temporary>
+      <list size="2">
+        <item index="0" class="java.lang.String" itemvalue="Python.json_memoize" />
+        <item index="1" class="java.lang.String" itemvalue="Python.convex-hull" />
+      </list>
+    </recent_temporary>
   </component>
   <component name="ShelveChangesManager" show_recycled="false" />
-  <component name="SvnConfiguration" maxAnnotateRevisions="500" myUseAcceleration="nothing" myAutoUpdateAfterCommit="false" cleanupOnStartRun="false" SSL_PROTOCOLS="all">
-    <option name="USER" value="" />
-    <option name="PASSWORD" value="" />
-    <option name="mySSHConnectionTimeout" value="30000" />
-    <option name="mySSHReadTimeout" value="30000" />
-    <option name="LAST_MERGED_REVISION" />
-    <option name="MERGE_DRY_RUN" value="false" />
-    <option name="MERGE_DIFF_USE_ANCESTRY" value="true" />
-    <option name="UPDATE_LOCK_ON_DEMAND" value="false" />
-    <option name="IGNORE_SPACES_IN_MERGE" value="false" />
-    <option name="CHECK_NESTED_FOR_QUICK_MERGE" value="false" />
-    <option name="IGNORE_SPACES_IN_ANNOTATE" value="true" />
-    <option name="SHOW_MERGE_SOURCES_IN_ANNOTATE" value="true" />
-    <option name="FORCE_UPDATE" value="false" />
-    <option name="IGNORE_EXTERNALS" value="false" />
-    <myIsUseDefaultProxy>false</myIsUseDefaultProxy>
+  <component name="SvnConfiguration" myUseAcceleration="nothing">
+    <configuration />
   </component>
   <component name="TaskManager">
     <task active="true" id="Default" summary="Default task">
@@ -362,30 +438,34 @@
     <frame x="0" y="31" width="1280" height="769" extended-state="6" />
     <editor active="true" />
     <layout>
+      <window_info id="Documentation" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="FLOATING" visible="false" weight="0.33" sideWeight="0.5" order="-1" side_tool="false" content_ui="tabs" x="100" y="131" width="1080" height="569" />
       <window_info id="Changes" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" weight="0.32876712" sideWeight="0.5" order="7" side_tool="false" content_ui="tabs" />
       <window_info id="Terminal" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" weight="0.32876712" sideWeight="0.5" order="7" side_tool="false" content_ui="tabs" />
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-      <window_info id="Project" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="true" weight="0.1627543" sideWeight="0.5" order="0" side_tool="false" content_ui="combo" />
+      <window_info id="Structure" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" weight="0.24919094" sideWeight="0.5" order="1" side_tool="false" content_ui="tabs" />
+      <window_info id="Project" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="true" weight="0.16744915" sideWeight="0.4988399" order="0" side_tool="false" content_ui="combo" />
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+      <window_info id="Favorites" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" weight="0.16747573" sideWeight="0.5011601" order="2" side_tool="true" content_ui="tabs" />
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+      <window_info id="Run" active="true" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="true" weight="0.33235294" sideWeight="0.5" order="2" side_tool="false" content_ui="tabs" />
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+      <window_info id="Find" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" weight="0.32941177" sideWeight="0.5" order="1" side_tool="false" content_ui="tabs" />
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+      <window_info id="Inspection" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" weight="0.4" sideWeight="0.5" order="5" side_tool="false" content_ui="tabs" />
     </layout>
   </component>
   <component name="Vcs.Log.UiProperties">
     <option name="RECENTLY_FILTERED_USER_GROUPS">
       <collection />
     </option>
+    <option name="RECENTLY_FILTERED_BRANCH_GROUPS">
+      <collection />
+    </option>
   </component>
   <component name="VcsContentAnnotationSettings">
     <option name="myLimit" value="2678400000" />
@@ -401,73 +481,174 @@
   </component>
   <component name="XDebuggerManager">
     <breakpoint-manager>
-      <option name="time" value="1" />
+      <option name="time" value="2" />
     </breakpoint-manager>
   </component>
   <component name="editorHistoryManager">
+    <entry file="file://$PROJECT_DIR$/test_swig_test.py">
+      <provider selected="true" editor-type-id="text-editor">
+        <state vertical-scroll-proportion="0.0" vertical-offset="0" max-vertical-offset="300">
+          <caret line="0" column="0" selection-start-line="0" selection-start-column="0" selection-end-line="0" selection-end-column="0" />
+          <folding />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/convex-hull.py">
+      <provider selected="true" editor-type-id="text-editor">
+        <state vertical-scroll-proportion="0.0" vertical-offset="750" max-vertical-offset="1530">
+          <caret line="50" column="11" selection-start-line="50" selection-start-column="11" selection-end-line="50" selection-end-column="11" />
+          <folding />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/test_swig_test.py">
+      <provider selected="true" editor-type-id="text-editor">
+        <state vertical-scroll-proportion="0.0" vertical-offset="0" max-vertical-offset="300">
+          <caret line="0" column="0" selection-start-line="0" selection-start-column="0" selection-end-line="0" selection-end-column="0" />
+          <folding />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/convex-hull.py">
+      <provider selected="true" editor-type-id="text-editor">
+        <state vertical-scroll-proportion="0.0" vertical-offset="750" max-vertical-offset="1530">
+          <caret line="50" column="11" selection-start-line="50" selection-start-column="11" selection-end-line="50" selection-end-column="11" />
+          <folding />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/test_swig_test.py">
+      <provider selected="true" editor-type-id="text-editor">
+        <state vertical-scroll-proportion="0.0" vertical-offset="0" max-vertical-offset="315">
+          <caret line="0" column="0" selection-start-line="0" selection-start-column="0" selection-end-line="0" selection-end-column="0" />
+          <folding />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/convex-hull.py">
+      <provider selected="true" editor-type-id="text-editor">
+        <state vertical-scroll-proportion="0.0" vertical-offset="240" max-vertical-offset="1365">
+          <caret line="43" column="11" selection-start-line="43" selection-start-column="11" selection-end-line="43" selection-end-column="11" />
+          <folding />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/test_swig_test.py">
+      <provider selected="true" editor-type-id="text-editor">
+        <state vertical-scroll-proportion="0.0" vertical-offset="0" max-vertical-offset="315">
+          <caret line="0" column="0" selection-start-line="0" selection-start-column="0" selection-end-line="0" selection-end-column="0" />
+          <folding />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/convex-hull.py">
+      <provider selected="true" editor-type-id="text-editor">
+        <state vertical-scroll-proportion="0.0" vertical-offset="240" max-vertical-offset="1365">
+          <caret line="43" column="11" selection-start-line="43" selection-start-column="11" selection-end-line="43" selection-end-column="11" />
+          <folding />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/test_swig_test.py">
+      <provider selected="true" editor-type-id="text-editor">
+        <state vertical-scroll-proportion="0.0" vertical-offset="0" max-vertical-offset="315">
+          <caret line="0" column="0" selection-start-line="0" selection-start-column="0" selection-end-line="0" selection-end-column="0" />
+          <folding />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/test_swig_test.py">
+      <provider selected="true" editor-type-id="text-editor">
+        <state vertical-scroll-proportion="0.0" vertical-offset="0" max-vertical-offset="315">
+          <caret line="0" column="0" selection-start-line="0" selection-start-column="0" selection-end-line="0" selection-end-column="0" />
+          <folding />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/least-squares.py">
+      <provider selected="true" editor-type-id="text-editor">
+        <state vertical-scroll-proportion="0.0" vertical-offset="555" max-vertical-offset="705">
+          <caret line="37" column="0" selection-start-line="0" selection-start-column="0" selection-end-line="0" selection-end-column="0" />
+        </state>
+      </provider>
+    </entry>
     <entry file="file://$PROJECT_DIR$/anki-sin-cos-table.py">
       <provider selected="true" editor-type-id="text-editor">
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-          <folding>
-            <element signature="e#23#58#0" expanded="false" />
-          </folding>
+        <state vertical-scroll-proportion="0.0" vertical-offset="270" max-vertical-offset="525">
+          <caret line="22" column="28" selection-start-line="0" selection-start-column="0" selection-end-line="0" selection-end-column="0" />
         </state>
       </provider>
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diff --git a/json_memoize.py b/json_memoize.py
new file mode 100644
index 0000000..5e31876
--- /dev/null
+++ b/json_memoize.py
@@ -0,0 +1,78 @@
+from __future__ import division, print_function
+
+from functools import update_wrapper, wraps
+import json
+import os
+
+
+def json_memoize(filename):
+    """Return a decorator that memoizes function calls in a JSON file."""
+
+    class JsonMemoize:
+
+        def __init__(self, fn):
+            self.fn = fn
+            update_wrapper(self, fn)
+
+            if not os.path.exists(filename):
+                with open(filename, "w") as f:
+                    json.dump({}, f)
+
+        # XXX should work with **kwargs, too.
+        def __call__(self, *args):
+
+            with open(filename, "r") as f:
+                memo = json.load(f)
+            if repr(args) not in memo:
+                memo[repr(args)] = self.fn(*args)
+                with open(filename, "w") as f:
+                    json.dump(memo, f)
+            return memo[repr(args)]
+
+    return JsonMemoize
+
+
+def timed(f):
+    """Return a timed version of function f.
+
+    The returned function returns a tuple of (time, real return value)
+
+    :param f: function to time
+    """
+
+    @wraps(f)
+    def wrapper(*args, **kwargs):
+        import time
+
+        time_start = time.time()
+        return_ = f(*args, **kwargs)
+        time_end = time.time()
+        time_delta = time_end - time_start
+        return time_delta, return_
+
+    return wrapper
+
+
+@json_memoize('json_memoize_tmp.json')
+def is_prime(n):
+    """Really inefficiently check if n is a prime number."""
+    if n == 0 or n == 1:
+        return False
+
+    for i in xrange(2, n):
+        if n % i == 0:
+            return False
+
+    return True
+
+
+assert (is_prime(0) is False)
+assert (is_prime(1) is False)
+assert (is_prime(2) is True)
+assert (is_prime(2 * 3 * 4 * 5 * 6 * 7 * 8 * 9 * 10) is False)
+
+is_prime_timed = timed(is_prime)
+for c in range(1, 11):
+    time, result = is_prime_timed(86028157)
+    assert (result is True)
+    print("Call {}: {:.2f}s".format(c, time))