查找循环字符串中字符串出现的总次数

def count_occurrences(circular_str, target_str):
    count = 0
    concatenated_str = circular_str + circular_str
    n = len(concatenated_str)
    m = len(target_str)
    i = 0

    while i < n:
        j = 0
        while i < n and j < m and concatenated_str[i] == target_str[j]:
            i += 1
            j += 1

        if j == m:
            count += 1

        i -= j - 1

    return count

circular_str = "abcabcabc"
target_str = "abc"
occurrences = count_occurrences(circular_str, target_str)
print("The target string '{}' occurs {} times in the circular string.".format(target_str, occurrences))