TypeError:写入文件时需要一个整数(got类型字符串)

data = "要写入的数据"
length = len(data)
file = open("文件路径", "w")
file.write(data, length)
file.close()

String data = "要写入的数据";
int length = data.length();
FileWriter writer = new FileWriter("文件路径");
writer.write(data, 0, length);
writer.close();

#include <iostream>
#include <fstream>
using namespace std;

int main() {
    string data = "要写入的数据";
    int length = data.length();
    ofstream file("文件路径");
    file.write(data.c_str(), length);
    file.close();
    return 0;
}