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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def _check_spades_log_file(logfile):
        '''SPAdes can fail with a strange error. Stop everything if this happens'''
        f = pyfastaq.utils.open_file_read(logfile)

        for line in f:
            if line.startswith('== Error ==  system call for:') and line.rstrip().endswith('finished abnormally, err code: -7'):
                pyfastaq.utils.close(f)
                print('Error running SPAdes. Cannot continue. This is the error from the log file', logfile, '...', file=sys.stderr)
                print(line, file=sys.stderr)
                raise Error('Fatal error ("err code: -7") running spades. Cannot continue')

        pyfastaq.utils.close(f)
        return True