Closed zf480 closed 4 years ago
zf480
commented
5 years ago After creating a python 3.4 environment, this problem is perfectly solved. However, when run the test file, there is no tearsheet result. I can see the return and sharpe ratio though.
JamesKBowler
commented
5 years ago 
mhallsmoore
commented
4 years ago Hi @zf480,
I pushed up some changes to the codebase yesterday to ensure compatibility with Python 3.5, 3.6 and 3.7. In addition threquirements.txt file has been updated for the latest versions of the dependencies.
In terms of the tearsheet disappearing there was a slight design issue in the code that prevented the tearsheet from 'blocking' the rest of the backtest process. This has now been modified such that the tearsheet displays by default, allowing you to save a figure.
Regards,
Mike.
I first met several problems when installing all required packages and then open the requirement file, installing each package separately.
However, later I met this problem:
(qstraderp3) bash-3.2$ python buy_and_hold_backtest.py Traceback (most recent call last): File "buy_and_hold_backtest.py", line 7, in
from qstrader.trading_session import TradingSession
File "/Users/pwl1972/venv/qstraderp3/lib/python3.7/site-packages/qstrader/trading_session.py", line 12, in
from .statistics.tearsheet import TearsheetStatistics
File "/Users/pwl1972/venv/qstraderp3/lib/python3.7/site-packages/qstrader/statistics/tearsheet.py", line 15, in
import seaborn as sns
File "/Users/pwl1972/venv/qstraderp3/lib/python3.7/site-packages/seaborn/init.py", line 17, in
from .widgets import *
File "/Users/pwl1972/venv/qstraderp3/lib/python3.7/site-packages/seaborn/widgets.py", line 8, in
from ipywidgets import interact, FloatSlider, IntSlider
File "/Users/pwl1972/venv/qstraderp3/lib/python3.7/site-packages/ipywidgets/init.py", line 20, in
from IPython import get_ipython
File "/Users/pwl1972/venv/qstraderp3/lib/python3.7/site-packages/IPython/init.py", line 48, in
from .core.application import Application
File "/Users/pwl1972/venv/qstraderp3/lib/python3.7/site-packages/IPython/core/application.py", line 24, in
from IPython.core import release, crashhandler
File "/Users/pwl1972/venv/qstraderp3/lib/python3.7/site-packages/IPython/core/crashhandler.py", line28, in
from IPython.core import ultratb
File "/Users/pwl1972/venv/qstraderp3/lib/python3.7/site-packages/IPython/core/ultratb.py", line 117,in
from IPython.utils import path as util_path
File "/Users/pwl1972/venv/qstraderp3/lib/python3.7/site-packages/IPython/utils/path.py", line 19, in
from IPython.utils.process import system
File "/Users/pwl1972/venv/qstraderp3/lib/python3.7/site-packages/IPython/utils/process.py", line 19,in
from ._process_posix import system, getoutput, arg_split, check_pid
File "/Users/pwl1972/venv/qstraderp3/lib/python3.7/site-packages/IPython/utils/_process_posix.py", line 24, in
import pexpect
File "/Users/pwl1972/venv/qstraderp3/lib/python3.7/site-packages/pexpect/init.py", line 75, in
from .pty_spawn import spawn, spawnu
File "/Users/pwl1972/venv/qstraderp3/lib/python3.7/site-packages/pexpect/pty_spawn.py", line 15, in
from .spawnbase import SpawnBase
File "/Users/pwl1972/venv/qstraderp3/lib/python3.7/site-packages/pexpect/spawnbase.py", line 218
def expect(self, pattern, timeout=-1, searchwindowsize=-1, async=False):
^
SyntaxError: invalid syntax
It's quite hard to believe that it fails because of invalid syntax. Anyone met similar problems before? I used Anaconda and python3.7