如何计算以字母开头的单词数？答案

【问题标题】：How do I count the number of words beginning with a letter?如何计算以字母开头的单词数？
【发布时间】：2023-02-21 11:24:30
【问题描述】：

您好，我需要帮助计算给定 book_excerpt 中以字母“a”开头的单词数量，我们存储在 num_with_a 和“d”中，我们存储在 num_with_d 中。

book_excerpt = "It was both the greatest and worst of times; it was the Age of Wisdom and the Age of Folly; it was the Epoch of Belief and the Epoch of Skepticism; it was the Age of Light and the Age of Darkness; it was the Spring of Hope and the Winter of Despair."

这是我试过的：

num_with_a = for f in book_excerpt:
   
    if beginning 'a' in f:

      print(f)

num_with_d = for f in book_excerpt:
    
    if beginning 'd' in f:
       
      print(f)

【问题讨论】：

好吧……怎么了？大概你有一个SyntaxError？（您是否还尝试过任何 Python 入门教程，例如 the official one？）顺便说一句，欢迎来到 Stack Overflow。首先检查的好地方是tour、How to Ask和minimal reproducible example。

标签： python

【解决方案1】：

您可以使用 for 循环：

for i in words:
    if list(i)[0] == "a":
        count += 1

count 是以字母开头的单词数。 words 是单词列表。您可以通过以下方式获得words：

book_excerpt = "It was both the greatest and worst of times; it was the Age of Wisdom and the Age of Folly; it was the Epoch of Belief and the Epoch of Skepticism; it was the Age of Light and the Age of Darkness; it was the Spring of Hope and the Winter of Despair."

words = book_excerpt.split(" ")

【讨论】：