如何在Python 3中统计字符串单词出现次数并基于指定类结构实现代码

To solve this problem, we can break down the task into simple, actionable steps:

• Split the input string into individual words using whitespace as the delimiter.
• Track how many times each word appears using a dictionary.
• Return the dictionary where keys are words and values are their respective occurrence counts.

Here's the complete implementation of the usermaincode class with the required word_occur class method:

class usermaincode(object):
    @classmethod
    def word_occur(cls, input1):
        # Empty dictionary to store word counts
        word_counts = {}
        # Split input string into a list of words
        words = input1.split()
        
        # Iterate through each word to update counts
        for word in words:
            if word in word_counts:
                word_counts[word] += 1
            else:
                word_counts[word] = 1
        
        return word_counts

Testing the Code #

If you run this with your example input:

input1 = "Hello new new"
print(usermaincode.word_occur(input1))

You’ll get the expected output: {'Hello': 1, 'new': 2}.

Quick Notes #

• This implementation is case-sensitive (e.g., "Hello" and "hello" would be counted as separate words). If you need case-insensitive counting, just convert each word to lowercase before checking the dictionary: word = word.lower().
• The split() method handles multiple spaces between words automatically, so inputs with extra whitespace will still work correctly.

内容的提问来源于stack exchange，提问作者Vidya