Hacking Secret Ciphers with Python

Chapter 3 – The Interactive Shell 33

We can even use the value in the spam variable to assign spam a new value:

spam = 15
spam = spam + 5
20

The assignment statement spam = spam + 5 is like saying, “the new value of the spam
variable will be the current value of spam plus five.” Remember that the variable on the left side
of the = sign will be assigned the value that the expression on the right side evaluates to. We can
keep increasing the value in spam by 5 several times:

spam = 15
spam = spam + 5
spam = spam + 5
spam = spam + 5
spam
30

Using More Than One Variable

Your programs can have as many variables as you need. For example, let’s assign different values
to two variables named eggs and fizz:

fizz = 10
eggs = 15

Now the fizz variable has 10 inside it, and eggs has 15 inside it.