Word Count

单词计数

≈ 15 min · python-strings · Open in WolfCode

One line. The lesson is which method to use — .split() vs .split(' ').

Python · runnable

def word_count(text):
    return len(text.split())

# Default split handles all the edge cases gracefully:
print(word_count("hello world"))            # 2
print(word_count("  hello   world  "))      # 2  (extra spaces collapsed)
print(word_count("a\tb\nc"))               # 3  (tabs / newlines work too)
print(word_count(""))                        # 0
print(word_count("   "))                     # 0

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Common wrong answers

Python · runnable

text = "hello world"
print(len(text))              # 11 — that's the CHARACTER count, not words
print(text.count(" "))        # 1  — that's the SPACE count, also wrong

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