exchange.GetContractType

```exchange.GetContractType()```函数返回FMZ平台定义的合约代码，例如：```this_week```、```swap```等。
string

exchange.GetContractType()

```javascript
function main () {
    Log(exchange.SetContractType("this_week")) 
    Log(exchange.GetContractType())
}

def main():
    Log(exchange.SetContractType("this_week"))
    Log(exchange.GetContractType())

void main() {
    Log(exchange.SetContractType("this_week"));
    Log(exchange.GetContractType());
}

{@fun/Futures/exchange.SetContractType exchange.SetContractType}

exchange.SetContractType exchange.GetFundings