How do I follow python PEP8 regarding line breaks, and how important is it?
<p>I am writing in python 3.5.1 and I am a programming novice.</p>

<p>I use gedit with a <a href="https://pypi.python.org/pypi/pep8" rel="noreferrer">pep8</a> and <a href="https://pypi.python.org/pypi/pyflakes" rel="noreferrer">pyflakes</a> plugins showing style mistakes according to the <a href="https://www.python.org/dev/peps/pep-0008/" rel="noreferrer">python style guide</a>. I do not know whether to follow the style recommendation to the letter or not.</p>

<p>I have, however, three recurring style flaws indicated by <code>E501: line too long (80 &gt; 79 characters)</code>, <code>E502: the backslash is redundant between brackets</code> and <code>E128/E127/...: continuation line under-indented for visual indent</code>. Screenshots below.</p>

<p>My two questions are:</p>

<ol>
<li>How can I adequately make a line break in python in order to avoid <code>E501</code> and the subsequent style errors <code>E502</code> and <code>E127/128</code>?</li>
<li>Is it helpful to follow the style guide pep8 to the letter, especially with publication in mind? What do advanced python programmers say?</li>
</ol>

<p>E501:
<a href="https://i.stack.imgur.com/MH9zn.png" rel="noreferrer"><img src="https://i.stack.imgur.com/MH9zn.png" alt="enter image description here"></a></p>

<p>E502:
<a href="https://i.stack.imgur.com/QVjzg.png" rel="noreferrer"><img src="https://i.stack.imgur.com/QVjzg.png" alt="enter image description here"></a></p>

<p>E127/128...:
<a href="https://i.stack.imgur.com/yDikE.png" rel="noreferrer"><img src="https://i.stack.imgur.com/yDikE.png" alt="enter image description here"></a></p>