<p>我用一个Arduino从传感器输出温度和湿度数据,这是由一台运行Python的电脑用pySerial读取的。数据读取正确,但我想删除CR/LF和意外字符。我在这个网站上发现的一个想法是使用lstrip或lreplace,但它们似乎不能正常工作。它们将删除角色的一个实例,但即使重复该行或进行一个小循环也没有效果。在</p>
<p>这是程序打印的内容(在我尝试删除不必要的字符后,最后一行是字符串):</p>
<blockquote>
<p>[b'\n', b'\r\n', b'Read sensor: OK\r\n', b'Hum40.00\r\n', b'TempC18.00\r\n']</p>
<p>[" b'Hum40.00\r\n'", " b'TempC18.00\r\n']"]</p>
</blockquote>
<p>我的目标是:</p>
<blockquote>
<p>[Hum40.00, TempC18.00]</p>
</blockquote>
<p>我希望以后可以对消息进行微调。在</p>
<p>代码如下:</p>
<pre><code> import serial as ser
import time
count = 0
msgArray = []
saveMsg = []
ser = ser.Serial('COM16', 9600, timeout=1, parity='N', stopbits=1, bytesize=8, xonxoff=0) # Setting up and opening COM port
ser.close()
ser.open()
def readSerial(): #reads a whole line from COM port
serLine = ser.readline()
return serLine
def sveMsgCut(): #saves the buffer as a message then cuts message
cutMsg = saveMsg
words = cutMsg.split(',')
return words
while True: #main program
dataSerial = readSerial()
if count < 5: #reads COM port 5 times and passes along to buffer msgArray
msgArray.<a href="https://www.cnpython.com/list/append" class="inner-link">append</a>(dataSerial)
count = count+1
else:
print(msgArray) #~display msgArray
saveMsg = str(msgArray) #convert to string
splitMsg = saveMsg.split(',') #splits string (csv)
phrase = splitMsg[3:5] #cuts out excess either side of Temp & Hum/
phraseString = str(phrase)
phraseNew = phraseString.lstrip("/n") #an attempts ot remove CR
print(phraseNew) #~print adjusted string
saveMsg = msgArray
count = 0 #resets msgArray and counter
msgArray = []
time.sleep(5)
</code></pre>
<p>我对编程相当陌生,尤其是Python,所以它可能是我错过的一些简单的东西,但我尝试了几种不同的想法,无法删除多余的字符。在</p>