【Python】Learn Python the hard way, ex33 while循环

最新推荐文章于 2025-07-10 15:31:34 发布

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本文通过一个简单的Python脚本示例介绍了如何使用while循环来构建一个数字列表，并展示了循环过程中变量的变化情况及最终形成的列表内容。

i = 0
numbers = []

while i < 6:
    print "At the top i is %d" % i
    numbers.append(i)
    i += 1
    print "Numbers now: ", numbers
    print "At the bottom i is %d" % i

print "The numbers: "

for num in numbers:
    print num
    
"""
Test Result:

At the top i is 0
Numbers now:  [0]
At the bottom i is 1
At the top i is 1
Numbers now:  [0, 1]
At the bottom i is 2
At the top i is 2
Numbers now:  [0, 1, 2]
At the bottom i is 3
At the top i is 3
Numbers now:  [0, 1, 2, 3]
At the bottom i is 4
At the top i is 4
Numbers now:  [0, 1, 2, 3, 4]
At the bottom i is 5
At the top i is 5
Numbers now:  [0, 1, 2, 3, 4, 5]
At the bottom i is 6
The numbers: 
0
1
2
3
4
5
"""