Add .gitignore

.gitignore

+.DS_Store
+.idea
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.idea/.gitignore

-# Default ignored files
-/workspace.xml
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.idea/Part3.iml

-<?xml version="1.0" encoding="UTF-8"?>
-<module type="PYTHON_MODULE" version="4">
-  <component name="NewModuleRootManager">
-    <content url="file://$MODULE_DIR$" />
-    <orderEntry type="inheritedJdk" />
-    <orderEntry type="sourceFolder" forTests="false" />
-  </component>
-  <component name="TestRunnerService">
-    <option name="PROJECT_TEST_RUNNER" value="Unittests" />
-  </component>
-</module>
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.idea/dictionaries/marcfeger.xml

-<component name="ProjectDictionaryState">
-  <dictionary name="marcfeger">
-    <words>
-      <w>dataframe</w>
-    </words>
-  </dictionary>
-</component>
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.idea/inspectionProfiles/profiles_settings.xml

-<component name="InspectionProjectProfileManager">
-  <settings>
-    <option name="USE_PROJECT_PROFILE" value="false" />
-    <version value="1.0" />
-  </settings>
-</component>
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.idea/misc.xml

-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="JavaScriptSettings">
-    <option name="languageLevel" value="ES6" />
-  </component>
-  <component name="ProjectRootManager" version="2" project-jdk-name="Python 3.7 (arguments)" project-jdk-type="Python SDK" />
-</project>
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.idea/modules.xml

-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="ProjectModuleManager">
-    <modules>
-      <module fileurl="file://$PROJECT_DIR$/.idea/Part3.iml" filepath="$PROJECT_DIR$/.idea/Part3.iml" />
-    </modules>
-  </component>
-</project>
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