Question

我在python中编写了一个程序，它接收字母，数字和字符，然后将它们转换为摩尔斯电码。该程序是为我的覆盆子pi编写的，并打开和关闭LED闪光灯。问题是用户在键入每个字符后必须按Enter键。我想这样做，以便用户可以输入整个单词和句子，然后用摩尔斯电码闪过，但我不知道如何打破这些话。

下面的代码如下，我希望你能理解它并帮助我：

print'Welcome to the Morse translator'
print'Enter the characters one by one pressing enter each time' 
print'Enter the GPIO pin number that you would like to use'  
pin = int (input())
while True:
   name = raw_input("Enter a letter, number or character to see it in morse:      ")
   print name

   import RPi.GPIO as gpio
   import time

   gpio.setmode(gpio.BCM)
   gpio.setup(pin, gpio.OUT)

   def dot():
      gpio.output(pin, gpio.HIGH)
      time.sleep(0.25)
      gpio.output(pin, gpio.LOW)
      time.sleep(0.25)

   def dash():
      gpio.output(pin, gpio.HIGH)
      time.sleep(0.75)
      gpio.output(pin, gpio.LOW)
      time.sleep(0.25)

   def e():
      time.sleep(0.75)



   if (name=='a'):
      dot()
      dash()
      e()
   elif (name=='b'):
      dash()
      dot()
      dot()
      dot()
      e()
   elif (name=='c'):
      dash()
      dot()
      dash()
      dot()
      e()
   elif (name=='d'):
      dash()
      dot()
      dot()
      e()
   elif (name=='e'):
      dot()
      e()
   elif (name=='f'):
      dot()
      dot()
      dash()
      dot()
      e()
   elif (name=='g'):
      dash()
      dash()
      dot()
      e()
   elif (name=='h'):
      dot()
      dot()
      dot()
      dot()
      e()
   elif (name=='i'):
      dot()
      dot()
      e()
   elif (name=='j'):
      dot()
      dash()
      dash()
      dash()
      e()
   elif (name=='k'):
      dash()
      dot()
      dash()
      e()
   elif (name=='l'):
      dot()
      dash()
      dot()
      dot()
      e()
   elif (name=='m'):
      dash()
      dash()
      e()
   elif (name=='n'):
      dash()
      dot()
      e()
   elif (name=='o'):
      dash()
      dash()
      dash()
      e()
   elif (name=='p'):
      dot()
      dash()
      dash()
      dot()
      e()
   elif (name=='q'):
      dash()
      dash()
      dot()
      dash()
      e()
   elif (name=='r'):
      dot()
      dash()
      dot()
      e()
   elif (name=='s'):
      dot()
      dot()
      dot()
      e()
   elif (name=='t'):
      dash()
      e()
   elif (name=='u'):
      dot()
      dot()
      dash()
      e()
   elif (name=='v'):
      dot()
      dot()
      dash()
      e()
   elif (name=='w'):
      dot()
      dash()
      dash()
      e()
   elif (name=='x'):
      dash()
      dot()
      dot()
      dash()
      e()
   elif (name=='y'):
      dash()
      dot()
      dash()
      dash()
      e()
   elif (name=='z'):
      dash()
      dash()
      dot()
      dot()
      e()
   elif (name=='1'):
      dot()
      dash()
      dash()
      dash()
      dash()
      e()
   elif (name=='2'):
      dot()
      dot()
      dash()
      dash()
      dash()
      e()
   elif (name=='3'):
      dot()
      dot()
      dot()
      dash()
      dash()
      e()
   elif (name=='4'):
      dot()
      dot()
      dot()
      dot()
      dash()
      e()
   elif (name=='5'):
      dot()
      dot()
      dot()
      dot()
      dot()
      e()
   elif (name=='6'):
      dash()
      dot()
      dot()
      dot()
      dot()
      e()
   elif (name=='7'):
      dash()
      dash()
      dot()
      dot()
      dot()
      e()
   elif (name=='8'):
      dash()
      dash()
      dash()
      dot()
      dot()
      e()
   elif (name=='9'):
      dash()
      dash()
      dash()
      dash()
      dot()
      e()
   elif (name=='0'):
      dash()
      dash()
      dash()
      dash()
      dash()
      e()   
   elif (name=='.'):
      dot()
      dash()
      dot()
      dash()
      dot()
      dash()
      e()
   elif (name==','):
      dash()
      dash()
      dot()
      dot()
      dash()
      dash()
      e()
   elif (name==':'):
      dash()
      dash()
      dash()
      dot()
      dot()
      dot()
      e()
   elif (name=='?'):
      dot()
      dot()
      dash()
      dash()
      dot()
      dot()
      e()
   elif (name=='-'):
      dash()
      dot()
      dot()
      dot()
      dot()
      dash()
      e()
   elif (name=='/'):
      dash()
      dot()
      dot()
      dash()
      dot()
      e()
   elif (name=='(' or ')'):
      dash()
      dot()
      dash()
      dash()
      dot()
      dash()
      e()
   elif (name=='@'):
      dot()
      dash()
      dash()
      dot()
      dash()
      dot()
      e()
   elif (name=='='):
      dash()
      dot()
      dot()
      dot()
      dash()
      e()
   elif (name==' '):
      e()
      e()
      e()
      e()
      e()
      e()
      e()
   else:
      print'This character is not supported'

   gpio.cleanup()

Answer 1

字符串基本上是字符列表，因此您可以迭代它们以分隔每个字符。

>>> name = 'This is a test'
>>> c = list()
>>> for x in name:
       c.append(x)
>>> print c
['T', 'h', 'i', 's', ' ', 'i', 's', ' ', 'a', ' ', 't', 'e', 's', 't']

或者作为列表理解：

>>> c = [x for x in name ]
>>> print c
['T', 'h', 'i', 's', ' ', 'i', 's', ' ', 'a', ' ', 't', 'e', 's', 't']

此外，我会写一个单独的函数将每个字符转换为莫尔斯信号：

>>> def char_to_morse(char):
        signals = {'a':[dash, dot] ...}
        for f in signals: f()

最后通过以下方式调用它：

>>> for x in name: char_to_morse(x)

Answer 2

拿你的名字变量，运行每个单词长度的for循环，通过if循环运行每个字符？

我如何在python中分解单词？

2 个答案: