Strategy Parameters

Reserved parameters

Reserved parameters cannot be used for other purposes.

Variable	Description	Type	Default Value
exchange_fee	set exchange fee for backtests and simulations. (default: 0.1%)	Number	0.001
spread	set spread for backtests and simulations.	Number	0
leverage	set leverage for live trades.	Number	1
IS_DEBUG	set True to enable IS_DEBUG mode for backtests.	Boolean	false

• How to set Leverage

Self-defined parameters

User could add their custom parameters and access them through self['OPTION_NAME'] in the strategy. You can easily change these parameter values for every run of live trade, backtest or simulation.

For example, if you have the following configuration for a strategy

caution

All arguments are stored and parsed as string str type in your strategy code. So you be sure to parse to appropriate type yourself!

Type

• Boolean

  A STRING that indicates either true or false

• Number

  A STRING that represents a float value.

• String

  A STRING that holds a ASCII string

• Select

  A STRING that holds a list of ASCII string. Separated by the symbol vertical bar |.

Example

Suppose you use the following configuration

Variable	Description	Type	Default Value
MyArgA	true/false	Boolean	true
MyArgB	a float num	Number	10.9
MyArgC	a ASCII Str	String	Hello World!
MyArgD	a ASCII list	Select	OptionA|OptionB|OptionC

note

Only ASCII string is supported currently

Then you're allowed to tweak these variables to be used in your strategy before trading. MyArgD will appear as a list consisting of OptionA, OptionB and OptionC.

note

You can access these arguments by self['argName']

def trade(self, candles):
    CA.log(self['MyArgA']) # true
    CA.log(self['MyArgB']) # 10.9
    CA.log(self['MyArgC']) # Hello World!
    CA.log(self['MyArgD']) # OptionC

    CA.log(str(self['MyArgA'].__class__)) # <class 'str'>
    CA.log(str(self['MyArgB'].__class__)) # <class 'str'>
    CA.log(str(self['MyArgC'].__class__)) # <class 'str'>
    CA.log(str(self['MyArgD'].__class__)) # <class 'str'>

    if self['MyArgB']:
        self.MyArgB = float(self['MyArgB'])

All of the types are string in python

So if you want to check MyArgA is true or not, you have to use it like if self['MyArgA'] == 'true' instead of if self['MyArgA].