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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 clock_in(request):
 """For clocking the user into a project."""

    user = request.user
    # Lock the active entry for the duration of this transaction, to prevent
    # creating multiple active entries.
    active_entry = utils.get_active_entry(user, select_for_update=True)

    initial = dict([(k, v) for k, v in request.GET.items()])
    data = request.POST or None
    form = ClockInForm(data, initial=initial, user=user, active=active_entry)
    if form.is_valid():
        entry = form.save()
        message = 'You have clocked into {0} on {1}.'.format(
            entry.activity.name, entry.project)
        messages.info(request, message)
        return HttpResponseRedirect(reverse('dashboard'))

    return render(request, 'timepiece/entry/clock_in.html', {
        'form': form,
        'active': active_entry,
    })