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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 encrypt(source, dest, keys):
 """Encrypts a file using the given keys"""

    cmd = flatten([gnupg_bin(), "--armor", "--output", dest, gnupg_verbose(),
                   gnupg_home(), recipients_args(keys),
                   "--encrypt", source])

    stderr_output(cmd)
    return True