Working with Integer Variables
As you might imagine, you can perform any mathematical operation you like on a numeric literal.
d = 300For more operators, see the page "Python Operators".
pi = 3.14159265
circumference = pi * d
r = d/2
c = 2 * pi * r
Working with Strings
With a string, one concatenates instead of adding. One can concatenate strings or their values. The result is a string that shows no indication that the two parts were ever separate. So if you need a space between the parts, you must be sure to include it when the two strings are joined.
a = 'big'
b = 'baboons'
phrase = a + b
full_phrase = b + " with " + a + " bahoochies"
print phrase
print full_phrase
output:
bigbaboons
baboons with big bahoochies
If you want more than one letter but still less than the whole string, you can cull out a substring by using the slicing operator:
>>> b = 'baboons'
>>> z = b[2:7]
>>> print z
boons
You can, of course, combine that substring with another string value and assign both to a single string literal.
>>> b = 'baboons'
>>> word = 'ball' + b[3:7]
>>> print word
balloons
