diff --git a/.idea/.gitignore b/.idea/.gitignore
new file mode 100644
index 0000000..26d3352
--- /dev/null
+++ b/.idea/.gitignore
@@ -0,0 +1,3 @@
+# Default ignored files
+/shelf/
+/workspace.xml
diff --git a/.idea/GUI.iml b/.idea/GUI.iml
new file mode 100644
index 0000000..d0876a7
--- /dev/null
+++ b/.idea/GUI.iml
@@ -0,0 +1,8 @@
+<?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>
+</module>
\ No newline at end of file
diff --git a/.idea/inspectionProfiles/profiles_settings.xml b/.idea/inspectionProfiles/profiles_settings.xml
new file mode 100644
index 0000000..105ce2d
--- /dev/null
+++ b/.idea/inspectionProfiles/profiles_settings.xml
@@ -0,0 +1,6 @@
+<component name="InspectionProjectProfileManager">
+  <settings>
+    <option name="USE_PROJECT_PROFILE" value="false" />
+    <version value="1.0" />
+  </settings>
+</component>
\ No newline at end of file
diff --git a/.idea/misc.xml b/.idea/misc.xml
new file mode 100644
index 0000000..7e83473
--- /dev/null
+++ b/.idea/misc.xml
@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" project-jdk-name="Python 3.9 (base)" project-jdk-type="Python SDK" />
+</project>
\ No newline at end of file
diff --git a/.idea/modules.xml b/.idea/modules.xml
new file mode 100644
index 0000000..4c064bc
--- /dev/null
+++ b/.idea/modules.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/GUI.iml" filepath="$PROJECT_DIR$/.idea/GUI.iml" />
+    </modules>
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 0000000..94a25f7
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/calculator.py b/calculator.py
new file mode 100644
index 0000000..4a43019
--- /dev/null
+++ b/calculator.py
@@ -0,0 +1,35 @@
+from argparse import ArgumentError
+import sys
+
+def add(x, y):
+    pass
+
+def sub(x, y):
+    return x-y
+
+def mult(x, y):
+    pass
+
+def div(x, y):
+    pass
+
+if __name__ == '__main__':
+    if len(sys.argv) != 3:
+        raise ArgumentError("Incorrect Number of Arguments")
+    
+    x = sys.argv[1]
+    y = sys.argv[2]
+
+    if sys.argv[0].lower() == "add":
+        print(add(x, y))
+
+    elif sys.argv[0].lower() == "sub":
+        print(sub(x, y))
+
+    elif sys.argv[0].lower() == "mult":
+        print(mult(x, y))
+
+    elif sys.argv[0].lower() == "div":
+        print(div(x, y))
+    
+    else: raise ArgumentError("Invalid Operation")
\ No newline at end of file