python怎么統(tǒng)計(jì)字符數(shù)量

小億
114
2024-05-14 10:27:13

要統(tǒng)計(jì)字符數(shù)量, 可以使用Python中的count()方法。例如:

string = "hello world"
char = 'o'
count = string.count(char)
print(f"The character '{char}' appears {count} times in the string.")

這段代碼將輸出:

The character 'o' appears 2 times in the string.

如果你想統(tǒng)計(jì)字符串中所有不重復(fù)字符的數(shù)量,你可以使用set()函數(shù)來(lái)獲取字符串中唯一字符的集合,然后再計(jì)算每個(gè)字符在原始字符串中出現(xiàn)的次數(shù)。例如:

string = "hello world"
unique_chars = set(string)
char_count = {}

for char in unique_chars:
    count = string.count(char)
    char_count[char] = count

print(char_count)

這段代碼將輸出一個(gè)字典,其中包含字符串中每個(gè)不重復(fù)字符及其出現(xiàn)的次數(shù)。

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