Python3练习题系列(02)
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2022-07-07 20:50:05
题目: 思考循环结构,看看它是怎样运行的,对我们认识程序有何益处。 知识点: list, for-loop, range 练习代码: 练习1 结果: 练习2 结果: 练习3 结果: 练习4 结果: 结果: 来自《笨办法学Python》 ......
题目:
思考循环结构,看看它是怎样运行的,对我们认识程序有何益处。
知识点:
list, for-loop, range
练习代码:
练习1
the_count = [1, 2, 3, 4, 5] # this first kind of for-loop goes through a list for number in the_count: print('This is count %d' % number)
结果:
This is count 1 This is count 2 This is count 3 This is count 4 This is count 5
练习2
fruits = ['apples', 'oranges', 'pears', 'apricots'] for fruit in fruits: print('A fruit of type: %s' % fruit)
结果:
A fruit of type: apples A fruit of type: oranges A fruit of type: pears A fruit of type: apricots
练习3
change = [1, 'pennies', 2, 'dimes', 3, 'quarters'] for i in change: print('I got %r' % i) # notice we have to use %r since we don't know what's in it.
结果:
I got 1 I got 'pennies' I got 2 I got 'dimes' I got 3 I got 'quarters'
练习4
elements = [] for i in range(0, 6): print('Adding %d to the list.' % i) elements.append(i)
结果:
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.
for i in elements: print('Element was: %d' % i)
结果:
Element was: 0 Element was: 1 Element was: 2 Element was: 3 Element was: 4 Element was: 5
来自《笨办法学Python》
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