{% extends 'layout.html' %}
{% block css %}
    <link href="{{ url_for('static', filename='chosen/chosen.css') }}" rel="stylesheet" type="text/css" />
{% endblock %}

{% block js %}
    <script src="//ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
    <script src="{{ url_for('static', filename='chosen/chosen.jquery.min.js') }}"></script>
    <script>
        $(document).ready(function() {
            $("#language").chosen();
        })
    </script>

{% endblock %}

{% block body %}

    <form method='POST' action="{{ url_for('pastes.index') }}">

        {{ form.hidden_tag(form.csrf_token, form.text) }}
        {{ form.paste(placeholder='Text goes here', autofocus='') }}
        {{ form.title(placeholder="Title (Optional)", maxlength=50, autocomplete='off') }}
        {{ form.password(placeholder="Password (Optional)", autocomplete='off') }}

        {{ form.language(**{'data-placeholder': 'Language'}) }}

        {{ form.unlisted }}
        {{ form.unlisted.label }}
        {{ form.submit }}

    </form>
{% endblock %}
{% extends 'layout.html' %}
{% block css %}
    <link href="{{ url_for('static', filename='chosen/chosen.css') }}" rel="stylesheet" type="text/css" />
{% endblock %}

{% block js %}
    <script src="//ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
    <script src="{{ url_for('static', filename='chosen/chosen.jquery.min.js') }}"></script>
    <script>
        $(document).ready(function() {
            $("#language").chosen();
        })
    </script>

{% endblock %}

{% block body %}

    <form method='POST' action="{{ url_for('pastes.index') }}" autocomplete='off'>

        {{ form.hidden_tag(form.csrf_token, form.text) }}
        {{ form.paste(placeholder='Text goes here', autofocus='') }}
        {{ form.title(placeholder="Title (Optional)", maxlength=50) }}
        {{ form.password(placeholder="Password (Optional)") }}

        {{ form.language(**{'data-placeholder': 'Language'}) }}

        {{ form.unlisted }}
        {{ form.unlisted.label }}
        {{ form.submit }}

    </form>
{% endblock %}
Add autocomplete='off' to form instead of inputs
Add autocomplete='off' to form instead of inputs
