擅长:python、mysql、java
<p>我不建议将<code>today</code>变量转换为字符串。在</p>
<p>要获得天数的差异,只需从彼此中减去两个datetime对象。在</p>
<pre><code>import datetime
# setup dates
previous_date = datetime.datetime.strptime("05-27-2018", '%m-%d-%Y')
today = datetime.datetime.today()
# compute difference
ndays = (today - previous_date).days
# print output
print(ndays)
</code></pre>
<p>这个输出</p>
^{pr2}$