diff --git a/src/python/12.FrequentPattemTree/.idea/workspace.xml b/src/python/12.FrequentPattemTree/.idea/workspace.xml
new file mode 100644
index 00000000..cf2ba026
--- /dev/null
+++ b/src/python/12.FrequentPattemTree/.idea/workspace.xml
@@ -0,0 +1,405 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ChangeListManager">
+    <list default="true" id="1a12937c-bc3d-4067-8fbc-1e7475a06be3" name="Default" comment="" />
+    <option name="EXCLUDED_CONVERTED_TO_IGNORED" value="true" />
+    <option name="TRACKING_ENABLED" value="true" />
+    <option name="SHOW_DIALOG" value="false" />
+    <option name="HIGHLIGHT_CONFLICTS" value="true" />
+    <option name="HIGHLIGHT_NON_ACTIVE_CHANGELIST" value="false" />
+    <option name="LAST_RESOLUTION" value="IGNORE" />
+  </component>
+  <component name="CreatePatchCommitExecutor">
+    <option name="PATCH_PATH" value="" />
+  </component>
+  <component name="ExecutionTargetManager" SELECTED_TARGET="default_target" />
+  <component name="FileEditorManager">
+    <leaf SIDE_TABS_SIZE_LIMIT_KEY="300">
+      <file leaf-file-name="fpGrowth.py" pinned="false" current-in-tab="false">
+        <entry file="file://$PROJECT_DIR$/fpGrowth.py">
+          <provider selected="true" editor-type-id="text-editor">
+            <state relative-caret-position="0">
+              <caret line="0" column="0" lean-forward="false" selection-start-line="0" selection-start-column="0" selection-end-line="0" selection-end-column="15" />
+              <folding />
+            </state>
+          </provider>
+        </entry>
+      </file>
+      <file leaf-file-name="apriori.py" pinned="false" current-in-tab="true">
+        <entry file="file://$PROJECT_DIR$/apriori.py">
+          <provider selected="true" editor-type-id="text-editor">
+            <state relative-caret-position="209">
+              <caret line="11" column="14" lean-forward="true" selection-start-line="11" selection-start-column="14" selection-end-line="11" selection-end-column="14" />
+              <folding />
+            </state>
+          </provider>
+        </entry>
+      </file>
+      <file leaf-file-name="test.py" pinned="false" current-in-tab="false">
+        <entry file="file://$PROJECT_DIR$/test.py">
+          <provider selected="true" editor-type-id="text-editor">
+            <state relative-caret-position="76">
+              <caret line="4" column="20" lean-forward="true" selection-start-line="4" selection-start-column="20" selection-end-line="4" selection-end-column="20" />
+              <folding />
+            </state>
+          </provider>
+        </entry>
+      </file>
+    </leaf>
+  </component>
+  <component name="FileTemplateManagerImpl">
+    <option name="RECENT_TEMPLATES">
+      <list>
+        <option value="Python Script" />
+      </list>
+    </option>
+  </component>
+  <component name="IdeDocumentHistory">
+    <option name="CHANGED_PATHS">
+      <list>
+        <option value="$PROJECT_DIR$/treeNode" />
+        <option value="$PROJECT_DIR$/fpGrowth" />
+        <option value="$PROJECT_DIR$/fpGrowth.py" />
+        <option value="$PROJECT_DIR$/test.py" />
+        <option value="$PROJECT_DIR$/apriori.py" />
+      </list>
+    </option>
+  </component>
+  <component name="ProjectFrameBounds">
+    <option name="x" value="232" />
+    <option name="y" value="404" />
+    <option name="width" value="1874" />
+    <option name="height" value="1096" />
+  </component>
+  <component name="ProjectView">
+    <navigator currentView="ProjectPane" proportions="" version="1">
+      <flattenPackages />
+      <showMembers />
+      <showModules />
+      <showLibraryContents />
+      <hideEmptyPackages />
+      <abbreviatePackageNames />
+      <autoscrollToSource />
+      <autoscrollFromSource />
+      <sortByType />
+      <manualOrder />
+      <foldersAlwaysOnTop value="true" />
+    </navigator>
+    <panes>
+      <pane id="ProjectPane">
+        <subPane>
+          <PATH>
+            <PATH_ELEMENT>
+              <option name="myItemId" value="12.FrequentPattemTree" />
+              <option name="myItemType" value="com.intellij.ide.projectView.impl.nodes.ProjectViewProjectNode" />
+            </PATH_ELEMENT>
+            <PATH_ELEMENT>
+              <option name="myItemId" value="External Libraries" />
+              <option name="myItemType" value="com.intellij.ide.projectView.impl.nodes.ExternalLibrariesNode" />
+            </PATH_ELEMENT>
+            <PATH_ELEMENT>
+              <option name="myItemId" value="&lt; Python 3.6.0 (C:\Users\pc\AppData\Local\Programs\Python\Python36-32\python.exe) &gt;" />
+              <option name="myItemType" value="com.intellij.ide.projectView.impl.nodes.NamedLibraryElementNode" />
+            </PATH_ELEMENT>
+          </PATH>
+          <PATH>
+            <PATH_ELEMENT>
+              <option name="myItemId" value="12.FrequentPattemTree" />
+              <option name="myItemType" value="com.intellij.ide.projectView.impl.nodes.ProjectViewProjectNode" />
+            </PATH_ELEMENT>
+            <PATH_ELEMENT>
+              <option name="myItemId" value="12.FrequentPattemTree" />
+              <option name="myItemType" value="com.intellij.ide.projectView.impl.nodes.PsiDirectoryNode" />
+            </PATH_ELEMENT>
+          </PATH>
+        </subPane>
+      </pane>
+      <pane id="Scope" />
+      <pane id="Scratches" />
+    </panes>
+  </component>
+  <component name="RunManager" selected="Python.test">
+    <configuration default="false" name="fpGrowth" 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="12.FrequentPattemTree" />
+      <option name="SCRIPT_NAME" value="F:\MachineLearning\src\python\12.FrequentPattemTree\fpGrowth.py" />
+      <option name="PARAMETERS" value="" />
+      <option name="SHOW_COMMAND_LINE" value="false" />
+      <method />
+    </configuration>
+    <configuration default="false" name="fpGrowth (1)" 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="12.FrequentPattemTree" />
+      <option name="SCRIPT_NAME" value="$PROJECT_DIR$/fpGrowth.py" />
+      <option name="PARAMETERS" value="" />
+      <option name="SHOW_COMMAND_LINE" value="false" />
+      <method />
+    </configuration>
+    <configuration default="false" name="test" 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="12.FrequentPattemTree" />
+      <option name="SCRIPT_NAME" value="$PROJECT_DIR$/test.py" />
+      <option name="PARAMETERS" value="" />
+      <option name="SHOW_COMMAND_LINE" value="false" />
+      <method />
+    </configuration>
+    <configuration default="true" 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="" />
+      <option name="WORKING_DIRECTORY" value="" />
+      <option name="IS_MODULE_SDK" value="false" />
+      <option name="ADD_CONTENT_ROOTS" value="true" />
+      <option name="ADD_SOURCE_ROOTS" value="true" />
+      <module name="12.FrequentPattemTree" />
+      <option name="SCRIPT_NAME" value="" />
+      <option name="PARAMETERS" value="" />
+      <option name="SHOW_COMMAND_LINE" value="false" />
+      <method />
+    </configuration>
+    <configuration default="true" type="Tox" factoryName="Tox">
+      <option name="INTERPRETER_OPTIONS" value="" />
+      <option name="PARENT_ENVS" value="true" />
+      <envs />
+      <option name="SDK_HOME" value="" />
+      <option name="WORKING_DIRECTORY" value="" />
+      <option name="IS_MODULE_SDK" value="false" />
+      <option name="ADD_CONTENT_ROOTS" value="true" />
+      <option name="ADD_SOURCE_ROOTS" value="true" />
+      <module name="12.FrequentPattemTree" />
+      <method />
+    </configuration>
+    <configuration default="true" type="tests" factoryName="Attests">
+      <option name="INTERPRETER_OPTIONS" value="" />
+      <option name="PARENT_ENVS" value="true" />
+      <envs />
+      <option name="SDK_HOME" value="" />
+      <option name="WORKING_DIRECTORY" value="" />
+      <option name="IS_MODULE_SDK" value="false" />
+      <option name="ADD_CONTENT_ROOTS" value="true" />
+      <option name="ADD_SOURCE_ROOTS" value="true" />
+      <module name="12.FrequentPattemTree" />
+      <option name="SCRIPT_NAME" value="" />
+      <option name="CLASS_NAME" value="" />
+      <option name="METHOD_NAME" value="" />
+      <option name="FOLDER_NAME" value="" />
+      <option name="TEST_TYPE" value="TEST_SCRIPT" />
+      <option name="PATTERN" value="" />
+      <option name="USE_PATTERN" value="false" />
+      <method />
+    </configuration>
+    <configuration default="true" type="tests" factoryName="Doctests">
+      <option name="INTERPRETER_OPTIONS" value="" />
+      <option name="PARENT_ENVS" value="true" />
+      <envs />
+      <option name="SDK_HOME" value="" />
+      <option name="WORKING_DIRECTORY" value="" />
+      <option name="IS_MODULE_SDK" value="false" />
+      <option name="ADD_CONTENT_ROOTS" value="true" />
+      <option name="ADD_SOURCE_ROOTS" value="true" />
+      <module name="12.FrequentPattemTree" />
+      <option name="SCRIPT_NAME" value="" />
+      <option name="CLASS_NAME" value="" />
+      <option name="METHOD_NAME" value="" />
+      <option name="FOLDER_NAME" value="" />
+      <option name="TEST_TYPE" value="TEST_SCRIPT" />
+      <option name="PATTERN" value="" />
+      <option name="USE_PATTERN" value="false" />
+      <method />
+    </configuration>
+    <configuration default="true" type="tests" factoryName="Nosetests">
+      <option name="INTERPRETER_OPTIONS" value="" />
+      <option name="PARENT_ENVS" value="true" />
+      <envs />
+      <option name="SDK_HOME" value="" />
+      <option name="WORKING_DIRECTORY" value="" />
+      <option name="IS_MODULE_SDK" value="false" />
+      <option name="ADD_CONTENT_ROOTS" value="true" />
+      <option name="ADD_SOURCE_ROOTS" value="true" />
+      <module name="12.FrequentPattemTree" />
+      <option name="SCRIPT_NAME" value="" />
+      <option name="CLASS_NAME" value="" />
+      <option name="METHOD_NAME" value="" />
+      <option name="FOLDER_NAME" value="" />
+      <option name="TEST_TYPE" value="TEST_SCRIPT" />
+      <option name="PATTERN" value="" />
+      <option name="USE_PATTERN" value="false" />
+      <option name="PARAMS" value="" />
+      <option name="USE_PARAM" value="false" />
+      <method />
+    </configuration>
+    <configuration default="true" type="tests" factoryName="Unittests">
+      <option name="INTERPRETER_OPTIONS" value="" />
+      <option name="PARENT_ENVS" value="true" />
+      <envs />
+      <option name="SDK_HOME" value="" />
+      <option name="WORKING_DIRECTORY" value="" />
+      <option name="IS_MODULE_SDK" value="false" />
+      <option name="ADD_CONTENT_ROOTS" value="true" />
+      <option name="ADD_SOURCE_ROOTS" value="true" />
+      <module name="12.FrequentPattemTree" />
+      <option name="SCRIPT_NAME" value="" />
+      <option name="CLASS_NAME" value="" />
+      <option name="METHOD_NAME" value="" />
+      <option name="FOLDER_NAME" value="" />
+      <option name="TEST_TYPE" value="TEST_SCRIPT" />
+      <option name="PATTERN" value="" />
+      <option name="USE_PATTERN" value="false" />
+      <option name="PUREUNITTEST" value="true" />
+      <option name="PARAMS" value="" />
+      <option name="USE_PARAM" value="false" />
+      <method />
+    </configuration>
+    <configuration default="true" type="tests" factoryName="py.test">
+      <option name="INTERPRETER_OPTIONS" value="" />
+      <option name="PARENT_ENVS" value="true" />
+      <envs />
+      <option name="SDK_HOME" value="" />
+      <option name="WORKING_DIRECTORY" value="" />
+      <option name="IS_MODULE_SDK" value="false" />
+      <option name="ADD_CONTENT_ROOTS" value="true" />
+      <option name="ADD_SOURCE_ROOTS" value="true" />
+      <module name="12.FrequentPattemTree" />
+      <option name="SCRIPT_NAME" value="" />
+      <option name="CLASS_NAME" value="" />
+      <option name="METHOD_NAME" value="" />
+      <option name="FOLDER_NAME" value="" />
+      <option name="TEST_TYPE" value="TEST_SCRIPT" />
+      <option name="PATTERN" value="" />
+      <option name="USE_PATTERN" value="false" />
+      <option name="testToRun" value="" />
+      <option name="keywords" value="" />
+      <option name="params" value="" />
+      <option name="USE_PARAM" value="false" />
+      <option name="USE_KEYWORD" value="false" />
+      <method />
+    </configuration>
+    <list size="3">
+      <item index="0" class="java.lang.String" itemvalue="Python.fpGrowth" />
+      <item index="1" class="java.lang.String" itemvalue="Python.fpGrowth (1)" />
+      <item index="2" class="java.lang.String" itemvalue="Python.test" />
+    </list>
+    <recent_temporary>
+      <list size="3">
+        <item index="0" class="java.lang.String" itemvalue="Python.test" />
+        <item index="1" class="java.lang.String" itemvalue="Python.fpGrowth" />
+        <item index="2" class="java.lang.String" itemvalue="Python.fpGrowth (1)" />
+      </list>
+    </recent_temporary>
+  </component>
+  <component name="ShelveChangesManager" show_recycled="false">
+    <option name="remove_strategy" value="false" />
+  </component>
+  <component name="TaskManager">
+    <task active="true" id="Default" summary="Default task">
+      <changelist id="1a12937c-bc3d-4067-8fbc-1e7475a06be3" name="Default" comment="" />
+      <created>1488289229649</created>
+      <option name="number" value="Default" />
+      <option name="presentableId" value="Default" />
+      <updated>1488289229649</updated>
+    </task>
+    <servers />
+  </component>
+  <component name="ToolWindowManager">
+    <frame x="232" y="404" width="1874" height="1096" extended-state="0" />
+    <editor active="true" />
+    <layout>
+      <window_info id="Project" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="true" show_stripe_button="true" weight="0.18622175" sideWeight="0.5" order="0" side_tool="false" content_ui="combo" />
+      <window_info id="TODO" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="6" side_tool="false" content_ui="tabs" />
+      <window_info id="Event Log" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="7" side_tool="true" content_ui="tabs" />
+      <window_info id="Find" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.32928064" sideWeight="0.5" order="1" side_tool="false" content_ui="tabs" />
+      <window_info id="Version Control" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="false" weight="0.33" sideWeight="0.5" order="7" side_tool="false" content_ui="tabs" />
+      <window_info id="Python Console" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="7" side_tool="false" content_ui="tabs" />
+      <window_info id="Run" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="true" show_stripe_button="true" weight="0.29787233" sideWeight="0.5" order="2" side_tool="false" content_ui="tabs" />
+      <window_info id="Structure" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.25" sideWeight="0.5" order="1" side_tool="false" content_ui="tabs" />
+      <window_info id="Terminal" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="7" side_tool="false" content_ui="tabs" />
+      <window_info id="Favorites" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="2" side_tool="true" content_ui="tabs" />
+      <window_info id="Debug" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.4" sideWeight="0.5" order="3" side_tool="false" content_ui="tabs" />
+      <window_info id="Cvs" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.25" sideWeight="0.5" order="4" side_tool="false" content_ui="tabs" />
+      <window_info id="Message" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="0" side_tool="false" content_ui="tabs" />
+      <window_info id="Commander" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.4" sideWeight="0.5" order="0" side_tool="false" content_ui="tabs" />
+      <window_info id="Inspection" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.4" sideWeight="0.5" order="5" side_tool="false" content_ui="tabs" />
+      <window_info id="Hierarchy" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.25" sideWeight="0.5" order="2" side_tool="false" content_ui="combo" />
+      <window_info id="Ant Build" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.25" sideWeight="0.5" order="1" side_tool="false" content_ui="tabs" />
+    </layout>
+  </component>
+  <component name="VcsContentAnnotationSettings">
+    <option name="myLimit" value="2678400000" />
+  </component>
+  <component name="XDebuggerManager">
+    <breakpoint-manager />
+    <watches-manager />
+  </component>
+  <component name="editorHistoryManager">
+    <entry file="file://$PROJECT_DIR$/fpGrowth.py">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="0">
+          <caret line="0" column="0" lean-forward="false" selection-start-line="0" selection-start-column="0" selection-end-line="0" selection-end-column="0" />
+          <folding />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/fpGrowth.py">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="0">
+          <caret line="0" column="0" lean-forward="false" selection-start-line="0" selection-start-column="0" selection-end-line="0" selection-end-column="15" />
+          <folding />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/test.py">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="76">
+          <caret line="4" column="20" lean-forward="true" selection-start-line="4" selection-start-column="20" selection-end-line="4" selection-end-column="20" />
+          <folding />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$USER_HOME$/.PyCharmCE2016.3/system/python_stubs/-168599814/builtins.py">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="-7">
+          <caret line="3652" column="12" lean-forward="true" selection-start-line="3652" selection-start-column="12" selection-end-line="3652" selection-end-column="12" />
+          <folding />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/apriori.py">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="209">
+          <caret line="11" column="14" lean-forward="true" selection-start-line="11" selection-start-column="14" selection-end-line="11" selection-end-column="14" />
+          <folding />
+        </state>
+      </provider>
+    </entry>
+  </component>
+</project>
\ No newline at end of file