Traceback (most recent call last):

 "./build.py", line 345, in <module>
make_package(args)

 "./build.py", line 252, in make_package
subprocess.call([ANDROID, 'update', 'project', '-p', '.', '-t', android_api])

 "/usr/lib/python2.7/subprocess.py", line 493, in call
return Popen(_popenargs, *_kwargs).wait()

 "/usr/lib/python2.7/subprocess.py", line 679, in **init**
errread, errwrite)

 "/usr/lib/python2.7/subprocess.py", line 1239, in _execute_child
raise child_exceptionOSError: [Errno 2] No such file or directory
Traceback (most recent call last):


 "buy_and_hold_backtest.py", line 7, in <module>

from qstrader.trading_session import TradingSession


 "/home/emperor/venv/qstraderp3/lib/python3.6/site-packages/qstrader/trading_session.py", line 5, in <module>

from .price_handler.yahoo_daily_csv_bar import YahooDailyCsvBarPriceHandler


 "/home/emperor/venv/qstraderp3/lib/python3.6/site-packages/qstrader/price_handler/yahoo_daily_csv_bar.py", line 3, in <module>

import pandas as pd


 "/home/emperor/venv/qstraderp3/lib/python3.6/site-packages/pandas/__init__.py", line 31, in <module>

"extensions first.".format(module))
ImportError: C extension: umpy.core.multiarray failed to import not built. If you want to import pandas from the source directory, you may need to run 'python setup.py build_ext --inplace' to build the C extensions first.`
