def fetch_timeseries(symbol, dir_name='data', use_cache=True, from_year=1900):
"""
Read time series data. Use cached version if it exists and
use_cache is True, otherwise retrive, cache, then read.
"""
base_dir = ''
try:
conf = pf.read_config()
base_dir = conf['base_dir']
except:
pass
finally:
dir_name = os.path.join(base_dir, dir_name)
if not os.path.exists(dir_name):
os.makedirs(dir_name)
timeseries_cache = os.path.join(dir_name, symbol + '.csv')
if os.path.isfile(timeseries_cache) and use_cache:
pass
else:
ts = pdr.DataReader(symbol, 'yahoo', start=datetime.datetime(from_year, 1, 1))
ts.to_csv(timeseries_cache, encoding='utf-8')
ts = pd.read_csv(timeseries_cache, index_col='Date', parse_dates=True)
ts = _adj_column_names(ts)
return ts
def _get_cache_dir(dir_name):
"""
Get the data dir path.
Parameters
----------
dir_name : str
The leaf data dir name.
Returns
-------
str
Path to the data dir.
"""
base_dir = ''
try:
conf = pf.read_config()
base_dir = conf['base_dir']
except:
pass
finally:
dir_name = os.path.join(base_dir, dir_name)
if not os.path.exists(dir_name):
os.makedirs(dir_name)
return dir_name
def fetch_timeseries(symbol, dir_name='data', use_cache=True, from_year=1900):
"""
Read time series data. Use cached version if it exists and
use_cache is True, otherwise retrive, cache, then read.
"""
base_dir = ''
try:
conf = pf.read_config()
base_dir = conf['base_dir']
except:
pass
finally:
dir_name = os.path.join(base_dir, dir_name)
if not os.path.exists(dir_name):
os.makedirs(dir_name)
timeseries_cache = os.path.join(dir_name, symbol + '.csv')
if os.path.isfile(timeseries_cache) and use_cache:
pass
else:
ts = pdr.DataReader(symbol,
'google',
start=datetime.datetime(from_year, 1, 1))
ts.to_csv(timeseries_cache, encoding='utf-8')
ts = pd.read_csv(timeseries_cache, index_col='Date', parse_dates=True)
ts = _adj_column_names(ts)
return ts
def _get_cache_dir(dir_name):
""" returns the path to the cache_dir """
base_dir = ''
try:
conf = pf.read_config()
base_dir = conf['base_dir']
except:
pass
finally:
dir_name = os.path.join(base_dir, dir_name)
if not os.path.exists(dir_name):
os.makedirs(dir_name)
return dir_name
def test_read_config(self, mocker):
''' Check that the config file is read correctly. '''
config_path = get_test_config_path()
config = ConfigParser()
config["global"] = {}
config["global"]["global1"] = "1"
config["global"]["base_dir"] = "some_directory"
config["global"]["global3"] = "3"
with open(config_path, "w") as config_file:
config.write(config_file)
conf_dict = pf.read_config()
self.assertTrue(config["global"]["base_dir"] == conf_dict["base_dir"])
