Develop Reference

how to concatenate tow Values as strings into an odoo Char field?

i'm trying to get fields from another model then do some operation on them, there is no problem with logic but I'm getting this error when the methods runs
psycopg2.DataError: invalid input syntax for type double precision: "1.007 t"
these all what I have done
class uom_custom(models.Model):
_inherit = 'product.template'
uom_qty = fields.Char(store=True,compute='get_qty')
#api.depends('qty_available')
def get_qty(self):
uoms=self.env['uom.uom'].search(['&',('category_id', '=', self.uom_id.category_id.id),('show_qty','=',True)])
if uoms.uom_type == 'bigger':
self.uom_qty= str(str(self.qty_available / uoms.factor_inv) + ' ' + uoms.name)
elif self.uom_type =='smaller':
self.uom_qty= str(self.qty_available * uoms.factor_inv) + ' ' + uoms.name
else:
self.uom_qty= str(self.qty_available) + ' ' + uoms.name
return self.uom_qty
so how can I display the value of mathematic operation and uom name beside it
Thanks in advance

The error states that the column in database is defined as double precision. Are you sure you've restarted Odoo and updated your module?
And there are some common mistakes in your compute method. Firstly and i can't repeat it often enough: try to stick to the Odoo naming guideline and name it compute_uom_qty. Secondly without a special decorator a compute method can and will be called with more than one record, so loop on that records. Thirdly: you search for uom.uom which can lead to more than one record, too. So either limit the search to one record or/and implement a check if something was found. uoms.name can lead to SingletonError. And at last: you don't have to return anything in compute methods.
#api.depends('qty_available')
def compute_uom_qty(self):
for record in self:
uoms = self.env['uom.uom'].search(
[('category_id', '=', record.uom_id.category_id.id),
('show_qty','=',True)], limit=1)
if uoms.uom_type == 'bigger':
qty = record.qty_available / uoms.factor_inv
record.uom_qty = "{} {}".format(qty, uoms.name)
elif uoms.uom_type =='smaller':
qty = record.qty_available * uoms.factor_inv
record.uom_qty = "{} {}".format(qty, uoms.name)
else:
record.uom_qty = "{} {}".format(record.qty_available, uoms.name)

python - class calls require me to send self, SpeechEngine.test_choice(SpeechEngine)

I'm having some issues where whenever I make a call to one of my classes methods it's requiring me to specifically send the containing class with the call, where I would expect it to already know about it self. I'm sure this is user error but can not track it down.
I've referenced python - self - required positional argument but i think i've got that covered.
class SpeechEngine():
def __init__(self):
self.conn = sqlite3.connect('../twbot.db')
self.c = self.conn.cursor()
#staticmethod
def choose(choice):
num_choices = len(choice)
selection = random.randrange(0, num_choices)
return selection
def initial_contact_msg(self, userId, screenName):
hello = self.c.execute("SELECT text, id FROM speechConstructs WHERE type='salutation'").fetchall()
tagline = self.c.execute("SELECT text, id FROM speechConstructs WHERE type='tagline'").fetchall()
c1 = self.choose(hello)
c2 = self.choose(tagline)
msg_string = str(hello[c1][0]) + ' #' + screenName + ' ' + tagline[c2][0]
# print(msg_string) # For Testing Only
# print(hello[c1][1]) # For Testing Only
return msg_string
And then I would expect to call
SpeechEngine.initial_contact_msg(0, 'somename')
But that returns the following
missing 1 required positional argument: 'self'
Where as if i do it implicitly
SpeechEngine.initial_contact_msg(SpeechEngine, 0, 'somename')
It returns the expected results no questions asked.
I should also point out the same happens when i would assign it as follows.
test = SpeechEngine
test.initial_contact_msg(0, 'somename')

Since initial_contact_msg is a method, you need to call it from an instance, not the Type. Your last attempt is almost right. To instantiate it, you need to do the following:
test = SpeechEngine()
test.initial_contact_msg(0, 'sometime')
"SpeechEngine" is the type class. When you create a new instance you need to call it like a function. This is similar to using the "new" keyword in other languages.
When you have a static method, this can be called directly from the Type object:
SpeechEngine.choose()
You can read more in the Python Documentation.

Referring Enum members to each other

I defined the following Enum in Python:
class Unit(Enum):
GRAM = ("g")
KILOGRAM = ("kg", GRAM, 1000.0)
def __init__(self, symbol, base_unit = None, multiplier = 1.0):
self.symbol = symbol
self.multiplier = multiplier
self.base_unit = self if base_unit is None else base_unit
I would expect that
print(Unit.GRAM.base_unit)
print(Unit.KILOGRAM.base_unit)
will return
Unit.GRAM
Unit.GRAM
However, what I get is quite confusing
Unit.GRAM
g
Why is it so?

The way Python defines a class involves creating a new scope, processing a bunch of statements (variable assignments, function definitions, etc.), and then actually creating a class object based on the local variables which exist after all those statements have run. Nothing gets converted into Enum instances until that last step.
You could understand it somewhat like this:
def make_class_Unit():
GRAM = ("g")
KILOGRAM = ("kg", GRAM, 1000.0)
def __init__(self, symbol, base_unit = None, multiplier = 1.0):
self.symbol = symbol
self.multiplier = multiplier
self.base_unit = self if base_unit is None else base_unit
return make_class(name='Unit', base=Enum, contents=locals())
Unit = make_class_Unit()
Looking at it this way, hopefully you can tell that at the time when KILOGRAM is defined, GRAM is really just a string. It doesn't become a Unit instance until the last stage, where I call the (imaginary) make_class() function.1
1Even though the make_class function I used above doesn't actually exist under that name, it's not too different from what Python really does, which is calling the constructor of type or a metaclass (which in this case is the metaclass for Enums).

DavidZ explained the problem well.
The last bit that you need to solve this problem is this: when the __init__ of each member is being run, the Enum has been created -- so you can call it:
self.base_unit = self if base_unit is None else self.__class__(base_unit)

Why is it so that I keep getting the error that Driver sponsor is not defined, even though I placed it within a class?

I have been trying my hand at a NASCAR project, where I would have to use a class to create 20 unique vehicles and then have them race ( or to see who would reach 500 miles first, through the means of repeatedly choosing a different speed between 1 and 120 and adding it to an increasing odometer). I made what you see below and ran it, and it boots well into the Python IDLE. However, it will always tell me that NameError: name 'Driver_sponsor' is not defined. See, I have been facing this error for a while now, and I have tried placing the Driver_sponsor list into a class, placing it into the Main def and placing the keyword self. before it. No matter what I did, I faced this error. I am going to go back into my class book to see what I can do, but I am hoping that someone here can tell me what I am missing within my code, since, really, I am extremely lost.
from random import randint
import time
class Car:
def __init__(self,Driver_Name,Sponsor):
self.__Total_Odometer_Miles = 0
self.__Speed_Miles_Per_Hour = 0
self.__Driver_Name = Driver_Name
self.__Sponsor = Sponsor
self.__Driver = ('Drivers name Missing')
self.__Sponsor = ('Sponsor Missing')
self.__Driver_sponsor = {'A.J.Allmendinger:3M','Aric Almirola:Allegiant ','Trevpr Bayne:AMR ','Ryan Blaney:Camping World ','Clint Bowyer:Chevrolet ',
'Chris Buesher:Coca-Cola','Kurt Busch:Coca-light ','Kyle Busch:Credit One ','Landon Cassill:Ford','Matt DiBenedetto:FDP',
'Austin Dillon:','Ty Dillon:','Dale Earnhardt:Jacob Companies ','Chase Elliott: M & M ','Denny Hamlin: Microsoft ',
'Kevin Harvick:GoodYear ','Jimmie Johnson:Nationwide','Erik Jones:SUNOCO','Kasey Kahne:Toyota','Matt Kenseth:Visa ' }
def Name(self,Driver_Name):
self.__Driver_Name = Driver_Name
def Retrieve_Name(self):
return self.__Driver_Name
def __mutualize__(self):
self.__Total_Odometer_Miles = 0
self.__Speed_Miles_Per_Hour = 0
def sponsors(self):
self.__Driver_sponsor = {'A.J.Allmendinger:3M','Aric Almirola:Allegiant ','Trevpr Bayne:AMR ','Ryan Blaney:Camping World ','Clint Bowyer:Chevrolet ',
'Chris Buesher:Coca-Cola','Kurt Busch:Coca-light ','Kyle Busch:Credit One ','Landon Cassill:Ford','Matt DiBenedetto:FDP',
'Austin Dillon:','Ty Dillon:','Dale Earnhardt:Jacob Companies ','Chase Elliott: M & M ','Denny Hamlin: Microsoft ',
'Kevin Harvick:GoodYear ','Jimmie Johnson:Nationwide','Erik Jones:SUNOCO','Kasey Kahne:Toyota','Matt Kenseth:Visa ' }
def Retrieve_sponsor(self,Driver_sponsor):
return self.__Driver_sponsor
def main():
for key in Driver_sponsor():
CurrentCar = Car()
CurrentCar.Driver = key
CurrentCar.Sponsor = val
CurrentCar.MPH = randint(1,120)
time.sleep(.05)
time = 5
currentCar.ODT = 5
CurrentCar.ODT = CurrentCar.ODT + CurrentCar.MPH*Time
print(CurrentCar.Driver,CurrentCar.ODT)
if CurrentCar.ODT >= 500:
print('\ the winner is',key,'t\ sponsored by',val)
main()

There are a few issues with your code.
First, you're getting this error because you're calling a variable that isn't set.
But more importantly, you're trying to access the driver-sponsor dict before you've initialized an instance of Car (which currently only happens inside the loop that iterates over Driver_sponsor!).
If you want to loop over driver-sponsor pairs and initialize a new Car for each one, then do you really need the full Driver_sponsor dict initialized for every Car? If so, just pass it as an argument when constructing Car and populate self.__Driver_sponsor.
For example:
driver_sponsor_pairs = {'A.J.Allmendinger:3M',...,'Matt Kenseth:Visa'}
class Car:
def __init__(self, driver_sponsor):
# ...
self.driver_sponsor = driver_sponsor
CurrentCar = Car(driver_sponsor=driver_sponsor_pairs)
# now refer to CurrentCar.driver_sponsor
Second, you are only asking for key when looping over the Driver_sponsor dict, but you call on both key (for Driver) and val (for Sponsor) in each loop . Extract both key and val in your loop creation. You'll need the .items() dict method to get both values:
for key, val in driver_sponsor_pairs.items():
...
Third, your Car __init__ expects Driver and Sponsor arguments, but you try to define CurrentCar = Car() and then populate CurrentCar.Driver and CurrentCar.Sponsor afterwards. Continuing with the above updates, try instead:
CurrentCar = Car(Driver=key, Sponsor=val)
Fourth, you won't need the Retrieve_sponsor() method if you already have the .Sponsor attribute set.
There are a lot of misunderstandings here about Object syntax and design. You may find it frustrating to try and debug at this level of complexity. I would suggest starting very simply, say, with Car() having just one attribute. Test that, make sure it works as you want, and then build more attributes and methods from there.

ERROR: unbound method "method name" must be called with "Class Name" instance as first argument (got classobj instance instead)

I hope you guys can help me out here.
I've been given this error from the following code:
Traceback (most recent call last):
File "C:\Python27\Lib\idlelib\Tarea5.py", line 60, in <module>
bg.addBandit(b)
TypeError: unbound method addBandit() must be called with BanditGroup instance as first argument (got classobj instance instead)
The code:
from numpy import *
from matplotlib import pyplot as p
class Bandit:
power = random.uniform(15,46)
life = random.uniform(40,81)
def __init__(self, power, life):
self.power = power
self.life = life
class BanditGroup:
def __init__(self,a):
self.group = [a] #Where 'a' is an object of the class Bandit
def addBandit(self,b):
self.group.append(b) #Where 'b' is an object of the class Bandit
return self.group
howmanygroups = random.randint(4,11)
i = 0
j = 0
while i <= howmanygroups:
bg = BanditGroup
howmanybandits = random.randint(1,11)
while j <= howmanybandits:
b = Bandit
bg.addBandit(b) #<-- line 60
j+=1
bgposx = random.uniform(0,50000)
bgposy = random.uniform(0,50000)
p.plot(bgposx,bgposy,'r^')
i+=1
I'd really appreciate if someone could tell me what's going on here. I started learning python 2.7 about 2 months ago.
Thanks!

Try changing your code to (notice the parenthesis around class instantiation):
while i <= howmanygroups:
bg = BanditGroup(a)
howmanybandits = random.randint(1,11)
while j <= howmanybandits:
b = Bandit(power, life)
bg.addBandit(b) #<-- line 60

The problem is that addBandit requires an instance of BanditGroup to be used. Adding (...) after the class name will create one:
bg = BanditGroup(...)
Right now, you have bg pointing to the class itself, not an instance of it.
The same thing needs to be done here with Bandit:
b = Bandit(...)
Note: ... means to pass in the appropriate arguments. You made BanditGroup.__init__ with a required a parameter and Bandit.__init__ with required power and life parameters. Since I don't know what you want these to be, I left them out.

Yes probably need parens when you create an instance of your Bandit and BanditGroup classes. Otherwise, you're assigning a class to your variables, not an instance of a class.
EG: bg = BanditGroup()