<p>对Python来说太陌生了。你知道吗</p>
<p>我试图找到一种方法来确定一个字符串和变量串联的列表是否是另一个列表的子集。请参阅下面的代码和结果</p>
<pre><code>y = ['test_sam_20190624.csv', 'test_phil_20190624.csv', 'test_bill_20190624.csv', 'test_jess_20190624.csv', 'test_issy_20190624.csv', 'test_clinton_20190624.csv']
x = ['sam', 'jack', 'bill', 'rodry', 'clinton']
print('\nFile list is ')
print(*y, sep="\n")
print('\nNeeded names are ')
print(*x, sep="\n")
datetoday = '20190624'
incl = [p for p in x if 'test'+p+datetoday+'.csv' in y]
not_incl = [p for p in x if 'test'+p+datetoday+'.csv' not in y]
print("\n Included")
print(*incl, sep="\m")
print("\n Not included")
print(*not_incl, sep="\n")
</code></pre>
<p>输出如下:</p>
<pre><code>File list is
test_sam_20190624.csv
test_phil_20190624.csv
test_bill_20190624.csv
test_jess_20190624.csv
test_issy_20190624.csv
test_clinton__20190624.csv
Needed names are
sam
jack
bill
rodry
clinton
Included
Not included
sam
jack
bill
rodry
clinton
Process finished with exit code 0
</code></pre>
<p>但我肯定会期望<code>incl = ['sam' 'bill 'clinton']</code>作为输出?输出为:</p>
<pre><code> Included
sam
bill
clinton
Not included
jack
rodry
</code></pre>
<p>我哪里出错了?也许是串在一起?你知道吗</p>
<p>if语句中缺少下划线(\)。应该是这样的。你知道吗</p>
<pre><code>incl = [p for p in x if 'test_'+p+'_'+datetoday+'.csv' in y]
not_incl = [p for p in x if 'test_'+p+'_'+datetoday+'.csv' not in y]
</code></pre>