擅长:python、mysql、java
<p>从PySerial SVN trunk(<a href="http://svn.code.sf.net/p/pyserial/code/trunk/pyserial/serial/serialwin32.py" rel="nofollow">http://svn.code.sf.net/p/pyserial/code/trunk/pyserial/serial/serialwin32.py</a>)中<code>Win32Serial</code>对象的源代码:</p>
<pre><code>def open(self):
"""\
Open port with current settings. This may throw a SerialException
if the port cannot be opened.
"""
if self._port is None:
raise SerialException("Port must be configured before it can be used.")
if self._isOpen:
raise SerialException("Port is already open.")
# the "\\.\COMx" format is required for devices other than COM1-COM8
# not all versions of windows seem to support this properly
# so that the first few ports are used with the DOS device name
port = self.portstr
</code></pre>
<p>所以把你的代码改成:</p>
^{pr2}$
<p>应该能正常工作。在</p>