Here’s an article that explains when

debugging the Ethereum Trading Bot with Backtrader

As a development, it can be frustrating when dealing with errors and bugs. ‘NoneType’ object has no attibute ‘_id’error that you're experience.

What is theAttributeError: ‘NoneType’ object has no Attribute ‘_id’Error?

. In this case, the_idAttribute of a none value is causing the issue.

POSSIBLE CAUSES:

There are several reasons why this error might be occurring in your backtrader script. Here are some possible causes and solutions:

1.
IncorRect Variable Initialization

Make sure that you're initializing variables correctly before trying to access them.

python

Backtrader AS BT

Initialize the cerebro object

cerebro = bt.cerebro ()

2.
Missing Import Statements

Ensure that all necessary imports are included in your code.

Importing Constant (Optional)

If you are using a recent version of Backtrader

`python

from _BackTrader_.Constant Import Constant

3.
IncorRect Data Initialization

Check if your data initialization is correct. In Backtrader, the _data Attribute of a cerebro object should contain a list or pandas dataframe representing historical prices.

Example correct initialization

Here’s an example of how to initialize _data with historical prices:

`python

Class Strategy (Bt.Str a

def __init __ (self):

self.data = bt.feeds.pandasdata (dataname = 'yahoo', fromdate = '1995-01-01', todate = '2022-02-26')

4.
Missing Cerebro Object Initialization

Ensure that the _cerebro object is initialized before trying to access its methods.

Example correct initialization

Here’s an example of how to initialize the _cerebro object:

`python

Class Strategy (Bt.Str a

def __init __ (self):

Super (Strategy, Self) .__ Init __ ()

cerebro = bt.cerebro ()

5.
Error in data processing

Check if there are any errors processing your data. OCCUR:

`python

Class Strategy (Bt.Str a

def __init __ (self):

Super (Strategy, Self) .__ Init __ ()

try:

cerebro.add-dat (self.data)

cerebro.run ()

Except exception as e:

Print (F "Error Processing Data: {E}")

Conclusion

The AttributeError: 'NoneType' object has no Attribute '_id' Error can occur due to various reasons such as incorrecting variable initialization, missing import statements, or errors in data processing. By following the steps outlined above and checking for any potential issues, you should

Example Code

Here’s an example code snippet that demonstrates how to fix the AttributeError using the corrected variable initialization:

“ python

Backtrader AS BT

Class Strategy (Bt.Str a

def __init __ (self):

cerebro = bt.cerebro ()

self.data = bt.feeds.pandasdata (dataname = ‘yahoo’, fromdate = ‘1995-01-01’, todate = ‘2022-02-26’)

cerebro.add-dat (self.data)

cerebro.run ()

Create and Start a New Backtrader Session

cerebro = bt.cerebro ()

strategist = strategy ()

cerebro.adddata (strategist)

cerebro.