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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_files (dirname):
 """Get iterator of entries in directory. Only allows regular files and directories, no symlinks."""

    for entry in os.listdir(dirname):
        fullentry = os.path.join(dirname, entry)
        if os.path.islink(fullentry):
            continue
        if os.path.isfile(fullentry):
            yield entry
        elif os.path.isdir(fullentry):
            yield entry+"/"