擅长:python、mysql、java
<p>您可以通过首先迭代列表(obs_dir)并形成字符串来创建所需的命令。在</p>
<p><strong>例如:</strong></p>
<pre><code>import os
obs_dir = ['18185','18186','18187','19926','19987','19994','19995','20045','20046','20081']
xid = ['src21']
s = "pset combine_spectra src_arfs="
for i in obs_dir:
s += "/{0}/{1}_{0}_spectrum.arf, ".format(i, xid[0])
s = s.strip().rstrip(',')
print s
#os.system(s)
</code></pre>