def find_project_number(string): # находим индекс точки dot_index = string.index('.') # находим индекс символа P, стоящий на 3-4 символа левее точки if string[dot_index - 4] == 'P': p_index = dot_index - 4 elif string[dot_index - 3] == 'P': p_index = dot_index - 3 else: return 'error ("P" not found)' # находим индекс последнего нужного символа end_of_number = dot_index + 4 return string[p_index:end_of_number + 1]
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