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+%0A'''exceptions used by the library'''%0A%0A%0Aclass InvalidDelimiterError(Exception):%0A    '''Raised when invalid market-pair delimiter is used.'''%0A    pass%0A%0A%0Aclass InvalidBaseCurrencyError(Exception):%0A    '''Raised when base currency you are trying to use is not support by the exchange,%0A       or when you are giving this method a wrong input.'''%0A    pass%0A

add exceptions file.