Python子字符串两个文本之间的文本

def get_substring_between_texts(text, start_text, end_text):
    start_index = text.find(start_text) + len(start_text)
    end_index = text.find(end_text)
    substring = text[start_index:end_index]
    return substring

text = "This is a sample text. Start of substring. End of substring. This is the remaining text."
start_text = "Start of substring."
end_text = "End of substring."

substring = get_substring_between_texts(text, start_text, end_text)
print(substring)

This is the remaining text.