搜索文本文件中大写单词的数量 Python

Question

我需要帮助整理文本文件

我已经尝试了 for 循环的多种变体。我还尝试去除所有空格并单独计算文件中的字母。我还尝试了 strip 函数的多种变体和不同的 if 语句

for character in file:
    if character.isupper():
        capital += 1
        file.readline().rstrip()
        break

print(capital)

我希望程序能够读取文档中的每个单词或字母以及 return 其中包含的大写单词的总数。

Answer 1

两件事：

确保您迭代的是字符而不是单词或句子。放一些打印语句来检查。
删除 if 块中的 break 语句。这将立即退出您的 for 循环，并导致您只计算 1。

for sentence in file:
    for char in sentence:
        if char.isupper():
            capital += 1

print(capital)

Answer 2

如果 objective 是计算以大写字母开头的单词，那么我会使用布尔值是整数子类型的事实：

with open('my_textfile.txt', 'r') as text:
    print(sum(word.istitle() for row in text for word in row))

Answer 3

假设我们有一个包含以下内容的示例文件 doc.txt：

This is a test file for identifying Capital Words. I created this as an Example because the question's requirements could vary. For instance, should acronyms like SQL count as capital words? If no: this should result in eight capital words. If yes: this should result in nine.

如果你想计算大写（又名首字母大写）单词，但排除首字母缩略词等全部大写的单词，你可以这样做：

def count_capital_words(filename):                                               
    count = 0                                                                    
    with open(filename, 'r') as fp:                                              
        for line in fp:                                                          
            for word in line.split():                                            
                if word.istitle():                                               
                    print(word)                                                  
                    count += 1                                                   
    return count


print(count_capital_words('doc.txt'))  # 8

如果要计算全部大写的单词，可以修改函数只检查单词的首字母。请注意，filter(None, ...) 函数将确保 word 永远不会为空字符串，从而避免在这些情况下抛出的 IndexError：

def count_capital_words(filename):                                               
    count = 0                                                                    
    with open(filename, 'r') as fp:                                              
        for line in fp:                                                          
            for word in filter(None, line.split()):                              
                if word[0].isupper():                                            
                    count += 1                                                   
    return count


print(count_capital_words('doc.txt'))  # 9

如果你有更复杂的需求，你可以像这样得到一个可迭代的单词：

from itertools import chain                                                      


def get_words(filename):                                                         
    with open(filename, 'r') as fp:                                              
        words = chain.from_iterable(line.split() for line in fp)                 
        yield from words

搜索文本文件中大写单词的数量 Python

Searching for the amount of capital words in a text file Python

python

string

search

file

capitalization