what wrong when I defined my class

[python101]

class Test:
    def __init__(self):
        self._power = False
        self._v = 5
        self._station = 80.0
        self._presets= [ 72.0, 74.4, 76.6]
 
    def togglePower(self):  # when I tried it this did not work
        self._powerOn = not self._PowerOn
 
    def setPreset(self, ind): 
            self._presets[ind]=self_station #when I enter .setPreset(1), it did not work either, global name '_station' is not defined
 
 

[elcron]

class Test:
    def __init__(self):
        self._power = False
        self._v = 5
        self._station = 80.0
        self._presets= [ 72.0, 74.4, 76.6]
 
    def togglePower(self):  # when I tried it this did not work
        self._powerOn = not self._PowerOn
 
    def setPreset(self, ind): 
            self._presets[ind]=self_station #when I enter .setPreset(1), it did not work either, global name '_station' is not defined
 
 

class Test:
    def __init__(self):
        self._power = False
        self._v = 5
        self._station = 80.0
        self._presets= [ 72.0, 74.4, 76.6]
 
    def togglePower(self):  # when I tried it this did not work
        self._powerOn = not self._PowerOn
 
    def setPreset(self, ind): 
            self._presets[ind]=self._station
 
 

you left out the "." after self and before _station.

[python101]

class Test:
    def __init__(self):
        self._power = False
        self._v = 5
        self._station = 80.0
        self._presets= [ 72.0, 74.4, 76.6]
 
    def togglePower(self):  
        self._powerOn = not self._powerOn
 
 

Thank you very much.

Another question, how can it make the following code return "True"

    def togglePower(self):  
        self._powerOn = not self._powerOn
 

It only return "none" when I try

print a.togglePower()
 

[bartonc]

class Test:
    def __init__(self):
        self._power = False
        self._v = 5
        self._station = 80.0
        self._presets= [ 72.0, 74.4, 76.6]
 
    def togglePower(self):  
        self._powerOn = not self._powerOn
 
 

Thank you very much.

Another question, how can it make the following code return "True"

    def togglePower(self):  
        self._powerOn = not self._powerOn
 

It only return "none" when I try

print a.togglePower()
 

    def togglePower(self):  
        self._power = not self._power
        return self._power
print a.togglePower()
 

[python101]

Thank you.


Another question related to the one below, can anyone locate the error in the source code below?

class Test:
    def __init__(self):
        self._powerOn = False
        self._v = 10
        self._station = 10
        self._presets= [ 5, 6, 7, 8]
 
    def togglePower(self):
        self._powerOn = not self._powerOn
 
    def setP(self, i):
            self._presets[i]=self._station
 
    def gotoP(self, i):
        self._station = self._presets[i]
 
    def increaseV(self):   
        self._v = self._v +2
 
    def decreaseV(self):   
        self._v = self._v -2
 
    def increaseStation(self):   
        self._station = self._station + 1
 
    def decreaseStation(self):   
        self._station = self._station - 1
 

[bartonc]

Thank you.


Another question related to the one below, can anyone locate the error in the source code below?

class Test:
    def __init__(self):
        self._powerOn = False
        self._v = 10
        self._station = 10
        self._presets= [ 5, 6, 7, 8]
 
    def togglePower(self):
        self._powerOn = not self._powerOn
 
    def setP(self, i):
            self._presets[i]=self._station
 
    def gotoP(self, i):
        self._station = self._presets[i]
 
    def increaseV(self):   
        self._v = self._v +2
 
    def decreaseV(self):   
        self._v = self._v -2
 
    def increaseStation(self):   
        self._station = self._station + 1
 
    def decreaseStation(self):   
        self._station = self._station - 1
 

It will be hard for us to tell without an example of which error you are getting. I do see that

# these two
 
    def setP(self, i):
            self._presets[i]=self._station
 
    def gotoP(self, i):
        self._station = self._presets[i]

will raise an error if you call the funtion with a number greater that 3.