使用variab的每次迭代从列表中提取块/组

Question

假设我有一个单词列表，比如：

words = ['word1', 'word2', 'word3', 'word4', 'word5', 'word6', 'word7', 'word8']

我该如何遍历它，将5个组作为字符串分配给一个变量，然后运行一些代码，然后更改变量，使我的输出看起来像这样：

var = 'word1', 'word2', 'word3', 'word4', 'word5'
print(var)
var = 'word6', 'word7', 'word8'
print(var)

Answer 1

您可以使用生成器表达式和^{}来实现这一点：

>>> words = ['word1', 'word2', 'word3', 'word4', 'word5', 'word6', 'word7', 'word8']

# generator to returns words in chunk of 5
>>> var = (words[i:i+5] for i in range(0, len(words), 5))

# first print using `next`
>>> print(next(var))
['word1', 'word2', 'word3', 'word4', 'word5']

# second print using `next`
>>> print(next(var))
['word6', 'word7', 'word8']