>>> assert 1 == 1 >>> assert 1 == 0 Traceback (most recent call last): File "<stdin>", line 1, in <module> AssertionError >>> >>> assert 1 == 0, 'One does not equal zero silly!' Traceback (most recent call last): File "<stdin>", line 1, in <module> AssertionError...
4.2 数字比较 num1=10num2=20ifnum1.equals(num2):print("num1 equals num2")else:print("num1 does not equal num2") 1. 2. 3. 4. 5. 6. 7. 上述代码中,我们比较了两个数字10和20,由于数字不相等,所以equals()函数返回False,最终输出"num1 does not equal num2"。 4.3 列表比较 list1=[1...
>>> assert 1 == 0 , 'One dose not equal zero silly!' Traceback (most recent call last): File "<stdin>", line 1, in <module> AssertionError: One dose not equal zero silly! 用try-except语句捕获AssertionError异常: >>> try: ... assert 1 == 0, 'One does not equal zero silly!
一旦所有流都被处理,note字典将返回给父函数: defparse_snt_file(snt_file):ifnotolefile.isOleFile(snt_file):print("This is not an OLE file")returnNoneole = olefile.OleFileIO(snt_file) note = {}forstreaminole.listdir():ifstream[0].count("-") ==3:ifstream[0]notinnote: note[stream[0]...
andasassertasyncawaitbreakclasscontinuedefdelelifelseexceptFalsefinallyforfromglobalifimportinislambdaNonenonlocalnotorpassraisereturnTruetrywhilewithyield Python二级考试涉及到的保留字一共有22个。选学5个:None、finally、lambda、pass、with。 Python中的保留字也是大小写敏感的。举例:True为保留字,而true则...
RuntimeError Raised when an error does not fall under any other category. StopIteration Raised by the next() function to indicate that there is no further item to be returned by theiterator. SyntaxError Raised by the parser when a syntax error is encountered. ...
A string can be non-empty but contain only whitespace characters. To handle this, you might want to useif not my_string.strip()to check for the presence of non-whitespace characters. How does strip() work in checking for an empty string?
out_device = cuda.device_array(shape=(n,), dtype=np.float32) # does not initialize the contents, like np.empty() 然后,我们可以在 ufunc 中使用特殊的 out 关键词参数,以指定输出缓存: In [ ] %timeit add_ufunc(x_device, y_device, out=out_device) 此次调用 add_ufunc 并不需要在主机和...
Python does this in constant time without having to scan through every item by using hash functions. When Python looks up a key foo in a dict, it first computes hash(foo) (which runs in constant-time). Since in Python it is required that objects that compare equal also have the same ...
None -- remove first occurrence of value. | Raises ValueError if the value is not present...