python与c++一些对比

嵌套对比

def as_view():
    print("1\n")
    def view():
        print("2\n")
    return view;

a=as_view
a()()

#include<iostream>
using namespace  std;
auto as_view()
{
    cout<<"1\n";
    auto view = []() // 使用Lambda函数定义a，c++嵌套真这样做
    { 
        cout<<"2\n"; 
    }; 
    return view;
}
int main()
{
    auto (*a)()=as_view;//函数指针
    a()();
    system("pause");
    return 0;
}

循环方法

for row in matrix: # row是每一行的list
    for element in row:
        print(element, end=' ')
    print()  # 换行
    
for a, b in matrix:
    print(a, b)
    
for i in range(len(matrix)):
    for j in range(len(matrix[0])):
    	print(matrix[i][j])