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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 wrap_stub(elf_file):
 """ Wrap an ELF file into a stub 'dict' """

    print('Wrapping ELF file %s...' % elf_file)
    e = esptool.ELFFile(elf_file)

    text_section = e.get_section('.text')
    try:
        data_section = e.get_section('.data')
    except ValueError:
        data_section = None
    stub = {
         'text': text_section.data,
         'text_start': text_section.addr,
         'entry': e.entrypoint,
        }
    if data_section is not None:
        stub['data'] = data_section.data
        stub['data_start'] = data_section.addr

    # Pad text with NOPs to mod 4.
    if len(stub['text']) % 4 != 0:
        stub['text'] += (4 - (len(stub['text']) % 4)) * '\0'

    print('Stub text: %d @ 0x%08x, data: %d @ 0x%08x, entry @ 0x%x' % (
        len(stub['text']), stub['text_start'],
        len(stub.get('data', '')), stub.get('data_start', 0),
        stub['entry']), file=sys.stderr)
    return stub