擅长:python、mysql、java
<p>您可以尝试查找带有空格的单词<code>' usb '</code>:</p>
<pre><code>import sys
logFile = open(sys.argv[1])
print("Printing all lines with USB in it...")
for line in logFile.readlines():
if line.lower().find(' usb ') != -1:
print(line)
print('Done!')
</code></pre>
<ul>
<li><p>例如:</p>
<pre><code>a = ' i have usbbox '
b = ' i have usb '
a.find('usb') # != -1
a.find(' usb ') # = -1 , bcs it doesnt contain the word 'usb' only
b.find(' usb ') # != -1 , it contains it
</code></pre></li>
</ul>