listdir(path=None) os.listdir()函数在使用时应注意以下几个问题: 1)函数参数path的值可以是字符串或字节串,如果使用字符串指定文件夹则返回的列表中都是字符串形式的文件和子文件夹名字,如果使用字节串指定文件夹则返回的列表中都是字节串形式(UTF-8编码)的文件和子文件夹名字,如果不指定参数则默认返回当前文件...
# python code for not None test # variable 1 with value a = "Hello" # variable 2 with None b = None # variable 3 with value c = 10 # performing is not None test if a is not None: print("value of a: ", a) else: print("\'a\' contains None") if b is not None: print...
In[16]:pd.DataFrame.fillna Out[16]:<functionpandas.core.frame.DataFrame.fillna(self,value:'object | ArrayLike | None'=None,method:'FillnaOptions | None'=None,axis:'Axis | None'=None,inplace:'bool'=False,limit=None,downcast=None)->'DataFrame | None'> value:直接将缺失值填充为字符串或者...
wait_for代码如下: async def wait_for(fut, timeout, *, loop=None): if loop is None: loop = events.get_event_loop() if timeout is None: return await fut if timeout <= 0: fut = ensure_future(fut, loop=loop) if fut.done(): return fut.result() fut.cancel() raise futures.Time...
"""classTestLogin(unittest.TestCase):# 在执行该类前所需要调用的方法@classmethoddefsetUpClass(cls) ->None:print('---打开浏览器')# 在执行该类后所需要调用的方法@classmethoddeftearDownClass(cls) ->None:print('---关闭浏览器')# 每个测试方法执行之前都会先调用的方法defsetUp(self):print('输入网址...
# <project_root>/tests/test_my_second_function.py import unittest import azure.functions as func from function_app import main class TestFunction(unittest.TestCase): def test_my_second_function(self): # Construct a mock HTTP request. req = func.HttpRequest(method='GET', body=None, url='...
(n_points: int,n_repeats: int,only_time: bool,)->None:"""Perform the tests and measure required time.Parameters---n_pointsnumber of random numbers used to for estimation.n_repeatsnumber of times the test is repeated.only_timeif True will only pri...
importosMESSAGE='该文件已经存在.'TESTDIR='testdir'try:home=os.path.expanduser("~")print(home)if...
for n in range(C.cols): C[m, n] += A[m, k] * B[k, n] fn benchmark[ func: fn (Matrix, Matrix, Matrix, Runtime) -> None ](M: Int, N: Int, K: Int, base_gflops: Float64, str: String): var C = Matrix(M, N) ...