Python str error

Question

I am using the following script : python script

# Import IQFeed Historical Data to InfluxDB
# 
# optional arguments:
#   -h, --help            show this help message and exit
#   --ticker TICKER       Ticker to request data for. (default: SPY)
#   --ticker-list TICKER_LIST
#                         Path to folder to create files. (default: None)
#   --dbhost DBHOST       InfluxDB hostname. (default: None)
#   --dbport DBPORT       InfluxDB port number. (default: None)
#   --iqhost IQHOST       IQfeed Connect hostname. (default: None)
#   --iqport IQPORT       IQfeed Connect port number. (default: None)
#   --username USERNAME   InfluxDB username. (default: None)
#   --password PASSWORD   InfluxDB password. (default: None)
#   --database DATABASE   InfluxDB database to use. (default: None)
#   --fromdate FROMDATE   Starting date for historical download with format:
#                         YYYY[-MM-DDTHH:MM:SS]. (default: None)
#   --todate TODATE       Ending date for historical download with format: YYYY
#                         [-MM-DDTHH:MM:SS]. (default: None)
#   --debug               Turn on debug logging level. (default: False)
#   --info                Turn on info logging level. (default: False)

I am running it with the following input:

python influx.py --ticker SPY --dbhost 127.0.0.1 --dbport 8088 --iqhost 127.0.0.1 --iqport 9100 --database SPY --fromdate 2017 --todate 2018

and get a str error. even if i change the dates to "20180101" still get the error on line 59. i can not seem to be able to debug it some quick reference.

the error points to the the : when declaring cmd: str

def _send_cmd(self, cmd: str):

if i remove that declaration then it just gives me another error on line 64 with the same issue saying thhe : is wrong in declaring as a str

def iq_query(self, message: str):

The error I got was:

File "influx.py", line 59
  def _send_cmd(self, cmd: str):
                         ^ SyntaxError: invalid syntax

Answer 1

That script requires Python 3.5 and above, but you are using Python 3.4. See typing for more information.

You can upgrade to the latest version of Python or simply remove : str and : np.array from the code.