Finding certain values from a dictionary as an input to a constructor python -

so have following code:

# constructor def __init__(self, dict):      # inputs     harvesting_time = 16 # hours     recovery_rate = 90 # %     unit_throughput = 93.63 # kg/annum/unit     cost_per_unit = 275000 # $     electricity = 0.0000331689825  # kwh/kg/unit     energy_cost = 10.41  # cent/kwh     labor_cost = 1777000  # $/annum     concentration = 100 # g/l      throughput = dict.get("output(kg/annum)",default=none)  # kg/annum     carbon = dict.get("carbon",default=none)     nitrogen = dict.get("nitrogen",default=none)     carbohydrates = dict.get("carbohydrates",default=none)     proteins = dict.get("proteins",default=none)     lipids = dict.get("lipids",default=none) 

the idea class suppose generate dictionary of values constructor takes input , searches values in order calculations. however, whenever run program (externally), following error.

throughput = dict.get("output(kg/annum)",default=none) # kg/annum

typeerror: get() takes no keyword arguments

could explain error means , how can circumvent it? thank much.

throughput = dict.get("output(kg/annum)",default=none)  # kg/annum 

don't use keyword "default" when specifying default value.

throughput = dict.get("output(kg/annum)", none)  # kg/annum 

actually, since default none default, don't have provide second argument @ all.

throughput = dict.get("output(kg/annum)")  # kg/annum