<p>另一种选择是使用第二种模式<code>\b[A-Z]+[A-Z\/]+\b</code>和<a href="https://docs.python.org/3/library/re.html#re.findall" rel="nofollow noreferrer">re.findall</a>,然后将这些部分连接在一起</p>
<pre><code>import re
df = '''
ACCP ACLL ADER ADERW AEAC AEACW AHI AIRTP AKO/A AKO/B ALIT AMHCU ANDAU APOPW AUGZ AUUD AUUDW
AVDG AVDR AYTUP BBRX BCAC BCACU BCACW BCTX BCTXW BF/A BF/B BIO/B BRK/A BRK/B BRLIU BRPAU BWL/A
CCZ CFCV CMCTP CMPX CNNB CNTX COMSW CPTAG CPTI CRD/A CRD/B CRTDW DDI DECZ DEFN DFH DRMT DSOC EAC
EACPW: No data found, symbol may be delisted- ECC : No data found, symbol may be delisted- ECOM :
No data found, symbol may be delisted
'''
result = ' '.join(re.findall(r"\b[A-Z]+[A-Z\/]+\b", df))
print(result)
</code></pre>
<p>输出</p>
<pre><code>ACCP ACLL ADER ADERW AEAC AEACW AHI AIRTP AKO/A AKO/B ALIT AMHCU ANDAU APOPW AUGZ AUUD AUUDW AVDG AVDR AYTUP BBRX BCAC BCACU BCACW BCTX BCTXW BF/A BF/B BIO/B BRK/A BRK/B BRLIU BRPAU BWL/A CCZ CFCV CMCTP CMPX CNNB CNTX COMSW CPTAG CPTI CRD/A CRD/B CRTDW DDI DECZ DEFN DFH DRMT DSOC EAC EACPW ECC ECOM
</code></pre>
<p><a href="https://ideone.com/O9eAJ0" rel="nofollow noreferrer">Python demo</a></p>