parent_command:fixedincome
usage: tbffr [-p {3_month,6_month}] [-s START_DATE] [-e END_DATE]

Get Selected Treasury Bill Minus Federal Funds Rate.

optional arguments:
  -p {3_month,6_month}, --parameter {3_month,6_month}
                        Selected Treasury Bill (default: 3_month)
  -s START_DATE, --start START_DATE
                        Starting date (YYYY-MM-DD) of data (default: None)
  -e END_DATE, --end END_DATE
                        Ending date (YYYY-MM-DD) of data (default: None)


Examples:
- To get the 3-month Treasury Bill minus Federal Funds Rate for the entire available period: fixedincome/tbffr
- To retrieve the 6-month Treasury Bill minus Federal Funds Rate for the entire available period: fixedincome/tbffr -p 6_month
- To obtain the 3-month Treasury Bill minus Federal Funds Rate for a specific date range: fixedincome/tbffr -s 2020-01-01 -e 2020-12-31
- To fetch the 6-month Treasury Bill minus Federal Funds Rate for a specific date range: fixedincome/tbffr -p 6_month -s 2020-01-01 -e 2020-12-31