what wrong when I defined my class

[python101]

[code=python]
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(sel f): # 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

[/code]

[elcron]

[code=python]
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(sel f): # 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

[/code]

[code=python]
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(sel f): # when I tried it this did not work
self._powerOn = not self._PowerOn

def setPreset(self, ind):
self._presets[ind]=self._station

[/code]
you left out the "." after self and before _station.

[python101]

[code=python]
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(sel f):
self._powerOn = not self._powerOn

[/code]
Thank you very much.

Another question, how can it make the following code return "True"
[code=python]
def togglePower(sel f):
self._powerOn = not self._powerOn
[/code]
It only return "none" when I try
[code=python]
print a.togglePower()
[/code]

[bartonc]

[code=python]
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(sel f):
self._powerOn = not self._powerOn

[/code]
Thank you very much.

Another question, how can it make the following code return "True"
[code=python]
def togglePower(sel f):
self._powerOn = not self._powerOn
[/code]
It only return "none" when I try
[code=python]
print a.togglePower()
[/code]

[code=python]
def togglePower(sel f):
self._power = not self._power
return self._power
print a.togglePower()
[/code]

[python101]

Thank you.


Another question related to the one below, can anyone locate the error in the source code below?
[code=python]
class Test:
def __init__(self):
self._powerOn = False
self._v = 10
self._station = 10
self._presets= [ 5, 6, 7, 8]

def togglePower(sel f):
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
[/code]

[bartonc]

Thank you.


Another question related to the one below, can anyone locate the error in the source code below?
[code=python]
class Test:
def __init__(self):
self._powerOn = False
self._v = 10
self._station = 10
self._presets= [ 5, 6, 7, 8]

def togglePower(sel f):
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
[/code]

It will be hard for us to tell without an example of which error you are getting. I do see that[CODE=python]# these two

def setP(self, i):
self._presets[i]=self._station

def gotoP(self, i):
self._station = self._presets[i][/CODE]will raise an error if you call the funtion with a number greater that 3.