AttributeError: module 'backtrader' has no attribute 'Cerebro'

Ramesh Gangappa

Initially it was working fine, all of sudden it is raising issue ...now trying on example code but the same error

from datetime import datetime
import backtrader as bt

class SmaCross(bt.SignalStrategy):
def init(self):
sma1, sma2 = bt.ind.SMA(period=10), bt.ind.SMA(period=30)
crossover = bt.ind.CrossOver(sma1, sma2)
self.signal_add(bt.SIGNAL_LONG, crossover)

cerebro = bt.Cerebro()
cerebro.addstrategy(SmaCross)

data0 = bt.feeds.YahooFinanceData(dataname='MSFT', fromdate=datetime(2011, 1, 1),
todate=datetime(2012, 12, 31))
cerebro.adddata(data0)

cerebro.run()
cerebro.plot()

Ramesh Gangappa

C:\Server\Kite Development\BackTrader>python signal.py
Traceback (most recent call last):
File "signal.py", line 2, in <module>
import backtrader as bt
File "C:\Program Files\Python37\lib\site-packages\backtrader_init_.py", line 62, in <module>
from .cerebro import *
File "C:\Program Files\Python37\lib\site-packages\backtrader\cerebro.py", line 27, in <module>
import multiprocessing
File "C:\Program Files\Python37\lib\multiprocessing_init_.py", line 16, in <module>
from . import context
File "C:\Program Files\Python37\lib\multiprocessing\context.py", line 5, in <module>
from . import process
File "C:\Program Files\Python37\lib\multiprocessing\process.py", line 18, in <module>
import signal
File "C:\Server\Kite Development\BackTrader\signal.py", line 10, in <module>
cerebro = bt.Cerebro()
AttributeError: module 'backtrader' has no attribute 'Cerebro'

C:\Server\Kite Development\BackTrader>python --version
Python 3.7.5

backtrader

@Ramesh-Gangappa said in AttributeError: module 'backtrader' has no attribute 'Cerebro':

C:\Server\Kite Development\BackTrader>python signal.py
Traceback (most recent call last):
File "signal.py", line 2, in <module>

@Ramesh-Gangappa said in AttributeError: module 'backtrader' has no attribute 'Cerebro':

File "C:\Program Files\Python37\lib\multiprocessing\process.py", line 18, in <module>
import signal

Your module has the same name as something which Python internals are trying to import. I actually fear you have misplaced things, but the safest bet: rename your script.

Ramesh Gangappa

Getting same error with module name change. I have reinstalled Python from the scratch, now problem is resolved. Thank you