I am trying to import stock data using Yahoo API as a source. I have tried it many times and I always get the same error, the start and end date are different from what I have passed. For example I pass the start and end date as '2015-1-1' & '2017-1-1' but the stock data I get start and ends at '2014-12-31' & '2016-12-30'. I dont know what I am doing wrong. I even tried using google but got a error as "data_sorce='google' not implemented."
Is there some other free data source I can use or correct the dates while using Yahoo? Jupyter notebook
You can import as yfinance and just enter a start and end when importing the data. Yahoo decommissioned their historical data API check out the Ran Aroussi the developer's of fix-yahoo-finance which is now yfinance blog where he details everything nicely https://aroussi.com/post/python-yahoo-finance
To install/upgrade yfinance using pip, run:
$ pip install yfinance
instead of this method
facebook = web.DateReader("FB", "yahoo", start, end)
can be in a format like this instead
override method from pandas_datareader by importing data as pdr
import yfinance as yf
yf.pdr_override() # <== the override :-)
# download dataframe using pandas_datareader
facebook = pdr.get_data_yahoo("FB", start="2015-1-1", end="2017-1-1")
or you can just use yfinance instead
import yfinance as yf
facebook = yf.download("FB", start="2015-1-1", end="2017-1-1")
Related
My simple python code is:
import yfinance as yf
print(yf.Ticker('AD.AS').info)
AS.AD is the sign for Ahold Delaize (https://finance.yahoo.com/quote/AD.AS?p=AD.AS&.tsrc=fin-srch).
Sadly if I execute this command I get the following json:
{'logo_url': ''}
I've tested the code with other stocks, these did work.
If anyone knows what I am doing wrong or if this is an known issue, I would be grateful if you shared it with me!
The string for the exchange and ticker symbol are reversed on your code
Change it to this and it will work:
import yfinance as yf
print(yf.Ticker('AD.AS').info)
import pandas_datareader.data as web
import numpy as np
import pandas as pd
stock = ['AAPL']
data = web.DataReader(stock,data_source="yahoo",start='01/01/2010')['Adj Close']
data.sort_index(inplace=True)
returns = data.pct_change()
mean_return = returns.mean()
return_stdev = returns.std()
annualised_return = round(mean_return * 252,2)
annualised_stdev = round(return_stdev * np.sqrt(252),2)
print ('The annualised mean return of stock {} is {}, '
'and the annualised volatility is {}').format(stock[0],annualised_return,annualised_stdev)
Release notes for pandas_datareader 0.10.0 does mention that there were issues with Yahoo API's requiring headers and were fixed in this release (0.10.0).
Fixed Yahoo readers which now require headers
So, if your google-colab uses any version older than 0.10.0 will have problems using Yahoo API's.
Here are some steps on how to debug the issue in google-colab - jupyter notebook.
Step 1: Determine the installed version of module pandas_datareader.
!pip show pandas_datareader
Step 2: if the version is lower than 0.10.0 then upgrade the version.
!pip install --upgrade pandas_datareader
Step 3: Don't forget to restart the runtime to load the new libraries.
Press Runtime->Restart runtime
Step 4: Now try running the step 1 again to determine if the newest version is installed.
!pip show pandas_datareader
I hope the newest version will be installed and you can run your above code with the correction mentioned by #Aaron in his answer.
Note: ! is required before shell commands. Try going thorugh the official docs of IPython for more info.
You're calling format on the output of the print function by putting it after the close parenthesis. print doesn't return anything, so you're effectively calling None.format(...) (which doesn't exist). You should instead call format on the string directly as such:
print('The annualised mean return of stock {} is {}, and the annualised volatility is {}'.format(stock[0],annualised_return,annualised_stdev))
Here is the corrected code:
import pandas_datareader.data as web
import numpy as np
import pandas as pd
stock = ['AAPL']
data = web.DataReader(stock,data_source="yahoo",start='01/01/2010')['Adj Close']
data.sort_index(inplace=True)
returns = data.pct_change()
mean_return = returns.mean()
return_stdev = returns.std()
annualised_return = round(mean_return * 252,2)
annualised_stdev = round(return_stdev * np.sqrt(252),2)
print(f"The annualised mean return of stock {stock[0]} is {annualised_return}, and the annualised volatility is {annualised_stdev}")
So the error came because you did not use a f string. An f string puts data in-between the brackets{}
For more info visit:
https://www.geeksforgeeks.org/python-output-formatting/#:~:text=In%20Python%2C%20there%20is%20no%20printf%20%28%29%20function,string%20modulo%20%28or%20sometimes%20even%20called%20modulus%29%20operator.
I am trying to get only workday data when importing Bitcoin quotes from yahoo finance. However, when I try to import it, it also gives weekend data, which I do not need. I transfered all data to .csv files to check what the problem was, and found that the bitcoin data included weekends and holidays. Since bitcoin is traded 24/7, I am getting more data. How do I get only data from workdays?
Code:
import pandas_datareader.data as web
import datetime as dt
start = dt.datetime(2017,1,1)
end = dt.datetime(2017,2,1)
a = web.DataReader('BTC-USD', 'yahoo', start, end)
a.to_csv('BTC.csv')
(Coded in Spyder, Python 3.7)
Use this:
import pandas_datareader.data as web
a = web.DataReader('BTC-USD', 'yahoo', '2017-01-01', '2017-02-01')
a_business_days = a[a.index.dayofweek < 5]
I was trying to get stock information as follows:
from pandas.io.data import DataReader
import datetime
data = DataReader("F", "yahoo", datetime.datetime(1990, 1, 1),datetime.datetime(2002, 1, 1))
which fails with
IOError: after 3 tries, Yahoo! did not return a 200 for url 'http://ichart.finance.yahoo.com/table.csv?s=C001.F&a=0&b=1&c=2014&d=11&e=1&f=2017&g=d&ignore=.csv'
Up to now, I could not find a fix for this issue or a suitable work-around. Do you guys have any suggestions?
It seems 'yahoo'is no longer supported. Try "morningstar" or "google".
The simple yahoo financial link,that worked for years, is no longer supported.
I've heard of a work around that involves browser spoofing (wget from command line) requires browser aliasing to obtain time sensitive cookies that are then required for each request -- but I've never tried it myself since "morningstar" currently still works (but I miss yahoo's adjusted close).
#(Pascal 3.6)
import pandas as pd
import pandas_datareader.data as web
...
df = web.DataReader('MSFT','morningstar')
for idx, row in df.iterrows():
print(idx[1],row[0],row[1],row[2],row[3],row[4])
Running this canonical example:
from pandas.io.data import Options
aapl = Options('aapl', 'yahoo')
data = aapl.get_all_data()
gives
RemoteDataError: Data not available
I know this used to be an issue in v0.14 or so, but it was supposedly fixed with v0.15. I'm on 0.18.1
It's Yahoo - they've changed their options site, so old parsers aren't working properly
Suggestion: first of all consider using pandas_datareader instead of deprecated pandas.io.data and monitor this issue so you'll know when this issue is fixed