initial commit with 2024 materials

hands_on/first_teacher/first.py

@@ -0,0 +1,13 @@
+def times_3(x):
+    """ Multiply x by 3.
+
+    Parameters
+    ----------
+    x : The item to multiply by 3.
+    """
+    return x * 3
+
+
+if __name__ == '__main__':
+    print(times_3(2))
+    print(times_3("a"))