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why-not/pandas_data_reader_example.py

Created September 13, 2019 03:59
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pandas data reader for stock data.
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pandas_data_reader_example.py
# command to install this library.
# conda install pandas-datareader
# example 1
import pandas_datareader as pdr
tsla = pdr.DataReader('tsla', data_source='google', start='2017-1-1')
# example 2
# calculates the trailing stop order price, can be used for weight loss like time series as well.
# Cumulative functions are nice.
def set_trailing_loss(symbol, purchase_date, perc):
close = pdr.DataReader(symbol, 'google', start=purchase_date)['Close']
return close.cummax() * perc
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