擅长:python、mysql、java
<p>格式化字符串文本或f-string是以“f”或“f”为前缀的字符串文本。在</p>
<p>这些字符串可能包含替换字段,这些字段是用大括号{}分隔的表达式。在</p>
<p>虽然其他字符串文本始终具有常量值,但格式化字符串实际上是在运行时计算的表达式。在</p>
<p><strong>在这种情况下</strong>:</p>
<p><code>'string.punctuation`` are a replacement field, i.e. the string is to be formatted with</code>周围的大括号字符串.标点符号<code>, which, in Python, is a 'string of ASCII characters which are considered punctuation marks in the</code>C“语言环境”。在</p>
<p>要了解更多信息,请查看<a href="https://docs.python.org/3/reference/lexical_analysis.html#f-strings" rel="nofollow noreferrer">these</a>Python文档和<a href="https://docs.python.org/3.1/library/string.html#string.punctuation" rel="nofollow noreferrer">^{<cd3>} references</a>:-)</p>