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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 valgrind(command, env={}):
 """Run a command with valgrind. :param command: command to be run :type command: str :param env: environment in which to run command :type env: str :raises check50.Failure: if, at the end of the check, valgrind reports any errors This function works exactly like :func:`check50.run`, with the additional effect that ``command`` is run through ``valgrind`` and ``valgrind``'s output is automatically reviewed at the end of the check for memory leaks and other bugs. If ``valgrind`` reports any issues, the check is failed and student-friendly messages are printed to the log. Example usage:: check50.c.valgrind("./leaky").stdin("foo").stdout("bar").exit(0) .. note:: It is recommended that the student's code is compiled with the `-ggdb` flag so that additional information, such as the file and line number at which the issue was detected can be included in the log as well. """

    xml_file = tempfile.NamedTemporaryFile()
    internal.register.after_check(lambda: _check_valgrind(xml_file))

    # Ideally we'd like for this whole command not to be logged.
    return run(f"valgrind --show-leak-kinds=all --xml=yes --xml-file={xml_file.name} -- {command}", env=env)