从Python数据集中找到k个最常见的单词
如果需要在数据集中找到10个最常见的单词，python可以使用collections模块帮助我们找到它。集合模块具有一个计数器类，该计数器类在提供单词列表之后给出单词的计数。我们还使用most_common方法找出程序输入所需的此类单词的数量。
例子
在下面的示例中，我们采用一个段落，然后首先创建Apply的单词列表split()。然后，我们将应用counter()来查找所有单词的计数。最后，most_common函数将为我们提供我们想要的频率最高的此类单词的适当结果。
from collections import Counter word_set = " This is a series of strings to count " \ "many words . They sometime hurt and words sometime inspire "\ "Also sometime fewer words convey more meaning than a bag of words "\ "Be careful what you speak or what you write or even what you think of. "\ # Create list of all the words in the string word_list = word_set.split() # Get the count of each word. word_count = Counter(word_list) # Use most_common() method from Counter subclass print(word_count.most_common(3))
输出结果
运行上面的代码给我们以下结果-
[('words', 4), ('sometime', 3), ('what', 3)]