python统计英文单词个数本关任务：输入一行字符，统计其中有多少个单词，每两个单词之间以空格隔开。如输入“This is a c++ program”,输出“There are 5 words in the line”。。

在Python中，你可以通过以下步骤来完成这个任务：

1. 首先，你需要将用户的输入字符串分割成单个单词。这可以通过`split()`函数完成，该函数会按照空白字符（包括空格、制表符等）将字符串切分成一个列表。

input_string = input("请输入一行字符: ")
words_list = input_string.split()

2. 然后，你可以获取列表的长度，这个长度就是单词的数量。因为`split()`默认只分隔空格，所以得到的就是单词个数。

word_count = len(words_list)

3. 最后，将结果格式化为字符串并输出。

output = f"There are {word_count} words in the line"
print(output)

整个程序代码可以这样写：

input_string = input("请输入一行字符: ")
words_list = input_string.split()
word_count = len(words_list)
output = f"There are {word_count} words in the line"
print(output)

相关问题

输入一行字符，每两个单词之间以空格隔开，统计其中有多少个单词，如输入：This is a Python program. 输出:There are 5 words in the line python

当你输入一行字符，通常会包含一系列由空格分隔的单词。要统计单词的数量，你需要首先分割字符串，然后计算分割后的部分数量减去一（因为最后一个部分不会被空格分隔）。这里假设我们默认首尾的空白字符不计入单词数。

例如，对于字符串 "This is a Python program."，我们可以按空格拆分成 "['This', 'is', 'a', 'Python', 'program.']"，去掉末尾的逗号和引号，就有5个单词。

如果你需要编写一个简单的Python函数来完成这个任务，可以这样做：

def count_words(line):
    # 删除末尾的非字母字符并将字符串转换为小写
    line = ''.join(e for e in line if e.isalnum()).lower()
    
    # 使用split()函数按空格拆分并计数单词
    word_list = line.split(' ')
    return f"There are {len(word_list)} words in the line"

input_line = "This is a Python program."
result = count_words(input_line)
print(result)

请输入一行英文字符串，统计其中有多少个单词 每两个单词之间以空格隔开，并将输入字符串按每个单词首字母大写方式输出

To count the number of words in a given English string and capitalize the first letter of each word, you can follow these steps:

1. Split the input string into individual words using whitespace as the delimiter.
2. Iterate over the resulting list of words.
3. For each word, capitalize the first letter (if it's not already capitalized) and store it back in the list.
4. Count the total number of items in the modified list, which represents the number of words.

Here's an example Python code snippet that demonstrates this process:

def capitalize_words_and_count(input_string):
    # Step 1: Split the string into words
    words = input_string.split(' ')

    # Step 2-3: Capitalize the first letter of each word
    capitalized_words = [word[0].upper() + word[1:] for word in words]

    # Step 4: Count the number of words
    num_words = len(capitalized_words)

    # Output the capitalized words
    capitalized_string = ' '.join(capitalized_words)
    
    return num_words, capitalized_string

# Example usage:
input_str = "this is a sample string"
num_words, result_string = capitalize_words_and_count(input_str)
print(f"Number of words: {num_words}")
print(f"Capitalized string: {result_string}")