/Dart/How to i convert this python code to dart?

How to i convert this python code to dart?

void main() {
  print(strip(strip(strip(strip(strip(" [(,'Sample String',)] ", " "), "[]"), "()"), ","), "''"));
  //Output: "Sample String"
}

String strip(String string, String char)
{  
  string = (string.startsWith(char[0]) && string.endsWith(char[char.length - 1])) 
  ? (){string = string.substring(1);
    string = string.substring(0, string.length - 1); return string;}() 
  : string;

  return string;
}

Source: stackoverflow.com

How to i convert this python code to dart?

def go_to(self):
        if Car.engine == True:
            km = int(input("Enter the distance: "))
            if self.benzin >= km:
                self.benzin -= km
                print("Destination reached") 
            elif self.benzin < km:   
                print("The amount of petrol to pass the enter distance is low")
        else:
            print("Please turn engine on!")

    def set(self, amount):
        if self.benzin + amount >= 100:
            print(f"Full tank. {amount - (100 - moshina.benzin)} petrol left unused ")
        else:
            print(f"{moshina.benzon + amount} Tank")

    def view_car(self):
        if Car.engine == True:
            print(f"Engine: ON\nPetrol: {self.benzin}")
        else:
            print(f"Engine: OFF\nPetrol: {self.benzin}")

How to i convert this python code to dart?

def go_to(self):
        if Car.engine == True:
            km = int(input("Enter the distance: "))
            if self.benzin >= km:
                self.benzin -= km
                print("Destination reached") 
            elif self.benzin < km:   
                print("The amount of petrol to pass the enter distance is low")
        else:
            print("Please turn engine on!")

    def set(self, amount):
        if self.benzin + amount >= 100:
            print(f"Full tank. {amount - (100 - moshina.benzin)} petrol left unused ")
        else:
            print(f"{moshina.benzon + amount} Tank")

    def view_car(self):
        if Car.engine == True:
            print(f"Engine: ON\nPetrol: {self.benzin}")
        else:
            print(f"Engine: OFF\nPetrol: {self.benzin}")

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