Add new string formatting method, f-string

source/week-1/variables/string-variables/f_strings.py

@@ -0,0 +1,12 @@
+# Only available for python 3.6+
+# This new way of formatting strings lets you 
+# use embedded Python expressions inside string constants.
+
+name = input("What is your name? ")
+subject = input("What subject do you like? ")
+print(f"{name}'s favorite subject is {subject}.")
+
+a = 5
+b = 10
+sum = a + b
+print(f'{a} plus {b} is equal to {sum}.')