Creating Python 2.7 Class

Hi, I am attempting to create a set of instructions that are grouped in a file under a class. This way, the commands that I need can be called very quickly.

I am having a problem, I keep getting the following error:

[ code ]

Traceback (most recent call last):

File "<pyshell#7>", line 1, in <module>

CMDmodule.send_when_different()

TypeError: unbound method send_when_different() must be called with CMDmodule instance as first argument (got nothing instead)

[ /code]

Does anyone know how I can get the groups of commands to work by me importing the module / class?

Attachments:

CMDmodule.py.zip

Parents

mgt6910 over 13 years ago

Fergus, this link may point you in the right direction...

http://stackoverflow.com/questions/4473184/unbound-method-f-must-be-called-with-fibo-instance-as-first-argument-got-cla

p.s. why did you use 512 tests to invert the motors instead of :

def invert_mota(self):
motor_a = 255 - motor_a

def invert_motb(self):
motor_b = 255 - motor_b
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wallarug over 13 years ago in reply to mgt6910

Malcolm Turner wrote:

Fergus, this link may point you in the right direction...

http://stackoverflow.com/questions/4473184/unbound-method-f-must-be-called-with-fibo-instance-as-first-argument-got-cla

p.s. why did you use 512 tests to invert the motors instead of :

def invert_mota(self):
motor_a = 255 - motor_a

def invert_motb(self):
motor_b = 255 - motor_b
I will have a look at this later.

And yes, I see the error in my ways now. I wasn't sure if that would work as the first time I used it, it spat out errors. I have fixed it now but I would still like to use a class for some other little programs that I am using.
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wallarug over 13 years ago in reply to wallarug

Here is a quick update.

i. I can import the module.
ii. I can bound the class
iii. I can call instances within the class without any errors.

But, the instances do not seem to do anything. See updated script below.

I do the following...
>> import CMDmodule
>> CMD = CMDmodule.CMDmodule()

Then I can call the instance that I want:
>> CMD.zero_variables()

I would have thought that at this stage I would now have all the variables under the "def <command>:" imported but that seems not to be the case.
>> CMD.zero_variables()
>> print a
Traceback (most recent call last):
File "<pyshell#13>", line 1, in <module>
print b
NameError: name 'b' is not defined

What am I doing wrong?

Attachments:
4401.CMDmodule.py.zip
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wallarug over 13 years ago in reply to wallarug

Here is a quick update.

i. I can import the module.
ii. I can bound the class
iii. I can call instances within the class without any errors.

But, the instances do not seem to do anything. See updated script below.

I do the following...
>> import CMDmodule
>> CMD = CMDmodule.CMDmodule()

Then I can call the instance that I want:
>> CMD.zero_variables()

I would have thought that at this stage I would now have all the variables under the "def <command>:" imported but that seems not to be the case.
>> CMD.zero_variables()
>> print a
Traceback (most recent call last):
File "<pyshell#13>", line 1, in <module>
print b
NameError: name 'b' is not defined

What am I doing wrong?

Attachments:
4401.CMDmodule.py.zip
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