print('--------------简单函数--------------')

def im_a_function():

print("I'm a function")

im_a_function()

print('--------------带参数的函数--------------')

def function_with_param(n=1):

print(f'n={n}')

function_with_param(10)

print('--------------关键字参数--------------')

def function_with_keywords_arguments(a, b, c, d):

print(f'a={a},b={b},c={c},d={d}')

function_with_keywords_arguments(b=1, a=2, d=4, c=3)

print('--------------任意参数列表--------------')

def function_with_varargs(*args):

for arg in args:

print(arg, end=',')

print()

function_with_varargs(1, 2, 34, 'fuck')

print('--------------解包参数列表--------------')

def function_with_unpacking_args(**argMap):

for k, v in argMap.items():

print(f'[{k}:{v}]', end=' ')

print()

function_with_unpacking_args(name='yitian', age=24, gender='male')

args = {'a': 5, 'b': 6, 'c': 1, 'd': 2}

function_with_keywords_arguments(**args)

print('--------------函数注解--------------')

def printFunctionAnnotation(a: str, b: int, c: list) -> None:

print(printFunctionAnnotation.__annotations__)

pass

printFunctionAnnotation('str', 22, [])

print('--------------lambda函数--------------')

im_a_lambda = lambda a, b: a + b

print(f'a+b={im_a_lambda(3,4)}')

print('--------------文档字符串--------------')

def function_with_documents():

'''\

这是一个文档字符串

'''

pass

print(f'文档:{function_with_documents.__doc__}')

print('--------------装饰器--------------')

def surround_decorator(func):

def new_func(*args, **kargs):

print('func_start')

result = func(*args, **kargs)

print('func_end')

return result

return new_func

@surround_decorator

def hello():

print('Hello !')

hello()