函数和变量

def cheese_and_crackers(cheese_count, boxes_of_crackers):
    print "You have %d cheeses!" % cheese_count
    print "You have %d boxes of crackers!" % boxes_of_crackers
    print "Man that's enough for a party!"
    print "Get a blanket.\n"


print "We can just give the function numbers directly:"
cheese_and_crackers(20, 30)


print "OR, we can use variables from our script:"
amount_of_cheese = 10
amount_of_crackers = 50

cheese_and_crackers(amount_of_cheese, amount_of_crackers)


print "We can even do math inside too:"
cheese_and_crackers(10 + 20, 5 + 6)


print "And we can combine the two, variables and math:"
cheese_and_crackers(amount_of_cheese + 100, amount_of_crackers + 1000)

　　结果：

 

smp@smp ~/python $ python def2vb.py
We can hust give the funtion numbers firectly:
You have 20 cheese!
You have 30 boxes of crackers1
Man that's enough for a party!
Get a blanket.

OR,we can use variables from our script:
You have 10 cheese!
You have 50 boxes of crackers1
Man that's enough for a party!
Get a blanket.

We can even do math inside too:
You have 30 cheese!
You have 11 boxes of crackers1
Man that's enough for a party!
Get a blanket.

And we can combine the two,variables and math:
You have 110 cheese!
You have 1050 boxes of crackers1
Man that's enough for a party!
Get a blanket.