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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 get_source(fileobj):
 """Translate fileobj into file contents. fileobj is either a string or a dict. If it's a string, that's the file contents. If it's a string, then the filename key contains the name of the file whose contents we are to use. If the dict contains a true value for the key delete_after_use, the file should be deleted once read. """

    if not isinstance(fileobj, dict):
        return fileobj
    else:
        try:
            with io.open(fileobj["filename"], encoding="utf-8",
                         errors="ignore") as f:
                return f.read()
        finally:
            if fileobj.get('delete_after_use'):
                try:
                    os.remove(fileobj["filename"])
                except:  # pragma: no cover
                    pass