JackInTaiwan

x = [1, 2, 3]

### Method 1: use "dir()"
print(dir(x))
# ['__add__', '__class__', '__contains__', '__delattr__', '__delitem__',
# '__dir__', '__doc__', '__eq__', '__format__', '__ge__', '__getattribute__',
# '__getitem__', '__gt__', '__hash__', '__iadd__', '__imul__', '__init__',
# '__init_subclass__', '__iter__', '__le__', '__len__', '__lt__', '__mul__',
# '__ne__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__reversed__',
# '__rmul__', '__setattr__', '__setitem__', '__sizeof__', '__str__',

JackInTaiwan

# main.py
if __name__ == '__main__':
    from sample_code import x

    print(x)
    
    
=================================
# sample_code.py
x = 1000

JackInTaiwan

static PyObject *indexerr = NULL;

PyObject *
PyList_GetItem(PyObject *op, Py_ssize_t i)
{
    if (!PyList_Check(op)) {
        PyErr_BadInternalCall();
        return NULL;
    }
    if (!valid_index(i, Py_SIZE(op))) {

JackInTaiwan

prices = [
    ("ice cream", 80),
    ("bike", 20000),
    ("water", 30),
]


sorted_by_price = sorted(prices, key=lambda x: x[1])
print(sorted_by_price)
# > [('water', 30), ('ice cream', 80), ('bike', 20000)]

JackInTaiwan

### Use recursive lambda functions to define function with multiple arguments
add = lambda x: (lambda y: x + y)
print(add(3)(5))
# > 8


### Use normal function to do the same thing
def add(x, y):
    return x + y
print(add(3, 5))

JackInTaiwan

### Build lambda function
lambda x: x + 1


### Build lambda function and assign it into one variable
add = lambda x: x + 1
print(add(5))
# > 6

JackInTaiwan

def dog():
    height = 40
    
    def grow_up():
        nonlocal height
        height = height + 1
        
        def show_height():
            print("Thanks for making me growing up. I'm now {} meters !!!!".format(height))

JackInTaiwan

def dog():
    height = 40
    
    def grow_up():
        nonlocal height
        height = height + 1
        print("Thanks for making me growing up. I'm now {} meters !!!!".format(height))

    return grow_up

JackInTaiwan

global x
x = 10

def add_x():
    x = x + 1



if __name__ == "__main__":
    add_x()

JackInTaiwan

def dog():
    height = 40
    
    def grow_up():
        height = height + 1

    return grow_up


if __name__ == "__main__":