the_count = [1,2,3,4,5] fruits = [‘apples‘, ‘oranges‘, ‘pears‘, ‘apricots‘] change = [1, ‘pennies‘, 2, ‘dimes‘, 3, ‘quarters‘] # this first kind of for-loop goes through a list for number in the_count: print("This is count %d" % number) # same as above for fruit in fruits: print("A fruit of type: %s" % fruit) # also we can go through mixed lists too # notice we have to use %r since we don‘t know what‘s in it for i in change: print("I got %r" % i) # we can also build lists, first start with an empty one elements = [] # then use the range function to do 0 to 5 counts for i in range(0, 6): print("Adding %d to the list." % i) #append is a function that lists understand elements.append(i) # now we can print them out too for i in elements: print("Element was: %d" % i)
output
This is count 1 This is count 2 This is count 3 This is count 4 This is count 5 A fruit of type: apples A fruit of type: oranges A fruit of type: pears A fruit of type: apricots I got 1 I got ‘pennies‘ I got 2 I got ‘dimes‘ I got 3 I got ‘quarters‘ Adding 0 to the list. Adding 1 to the list. Adding 2 to the list. Adding 3 to the list. Adding 4 to the list. Adding 5 to the list. Element was: 0 Element was: 1 Element was: 2 Element was: 3 Element was: 4 Element was: 5
2019-09-30
17:13:35
原文地址:https://www.cnblogs.com/petitherisson/p/11612085.html
时间: 2024-08-30 02:02:49