无法从函数更新全局变量

var globalVariable = 10;

function updateGlobalVariable(variable) {
  variable = 20;
}

updateGlobalVariable(globalVariable);
console.log(globalVariable); // 输出 10，全局变量的值未被修改

global_variable = [10]

def update_global_variable():
  global_variable[0] = 20

update_global_variable()
print(global_variable) # 输出 [20]，全局变量的值被修改

global_variable = 10

def update_global_variable():
  global global_variable
  global_variable = 20

update_global_variable()
print(global_variable) # 输出 20，全局变量的值被修改