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check wether markers are in text and then .index solution in Clear category for Between Markers by ann3leo
def between_markers(text: str, begin: str, end: str) -> str:
"""
returns substring between two given markers
"""
start_index = 0
start_len = 0
end_index = len(text)
if begin in text:
start_index = text.index(begin)
start_len = len(begin)
if end in text:
end_index = text.index(end)
return text[(start_index+start_len):end_index]
if __name__ == '__main__':
print('Example:')
print(between_markers('What is >apple<', '>', '<'))
# These "asserts" are used for self-checking and not for testing
assert between_markers('What is >apple<', '>', '<') == "apple", "One sym"
assert between_markers("My new site",
"", "") == "My new site", "HTML"
assert between_markers('No[/b] hi', '[b]', '[/b]') == 'No', 'No opened'
assert between_markers('No [b]hi', '[b]', '[/b]') == 'hi', 'No close'
assert between_markers('No hi', '[b]', '[/b]') == 'No hi', 'No markers at all'
assert between_markers('No ', '>', '<') == '', 'Wrong direction'
print('Wow, you are doing pretty good. Time to check it!')
Sept. 30, 2020
