 zero (<code class="docutils literal notranslate"><span class="pre">'0'</span></code>) character enables sign-aware
zero-padding for numeric types. It forces the padding to be placed after the
sign or base (if any) but before the digits. This is used for printing fields in
the form ‘+000000120’. This option is only valid for numeric types and it has no
effect on formatting of infinity and NaN.</p>
<p>The <em>precision</em> is a decimal number indicating how many digits should be
displayed after the deci