AI代码解释 from scipy.sparseimportissparseifissparse(adata.X):adata.obs['nUMIs']=adata.X.toarray().sum(axis=1)adata.obs['mito_perc']=adata[:,adata.var["mt"]].X.toarray().sum(axis=1)/adata.obs['nUMIs'].values adata.obs['detected_genes']=(adata.X.toarray()>0).sum(axis=1)els...
array(data: 'Sequence[object] | AnyArrayLike', dtype: 'Dtype | None' = None, copy: 'bool' = True) -> 'ExtensionArray' Create an array. Parameters --- data : Sequence of objectsThe scalars inside `data` should be instances of thescalar type for `dtype`. It's expected that `data`...
NumPy数组也可以使用逻辑索引进行索引,但这实际上意味着什么? Just as we can have an array of numbers, we can have an array consisting of true and false, which are two Boolean elements. 正如我们可以有一个数字数组一样,我们也可以有一个由true和false组成的数 ...
The current implementation keeps an array of integer objects for all integers between -5 and 256, when you create an int in that range you just get back a reference to the existing object. So it should be possible to change the value of 1. I suspect the behavior of Python, in this ...
BooleanBoolean (bool) nullNoneType (NoneType) Accessing and using the Lambda context object The Lambda context object contains information about the function invocation and execution environment. Lambda passes the context object to your function automatically when it's invoked. You can use the context ...
The reason for this default value is that 0 is false in a Boolean sense, but enum members evaluate to True. Therefore, starting from 0 would seem surprising and confusing. Most of the time, you’ll just use the first two arguments to Enum when creating your enumerations. Here’s an ...
>>> portOpen = True # A boolean >>> type(portOpen) <type ‘bool’> Strings The Python string module provides a very robust series of methods for strings. Read the Python documentation at http://docs.python.org/library/string.html for the entire list of available methods. Let’s examine...
Apache Spark SQL data typePython data type array numpy.ndarray bigint int binary bytearray boolean bool date datetime.date decimal decimal.Decimal double float int int map str null NoneType smallint int string str struct str timestamp datetime.datetime tinyint intTroubleshooting...
Return a Boolean value, i.e. one of True or False. x is converted using the standard truth testing procedure. If x is false or omitted, this returns False; otherwise it returns True. The bool class is a subclass of int (see Numeric Types — int, float, complex). ...
_where(self, cond, other, inplace, axis, level, errors, try_cast) 5889 for dt in cond.dtypes: 5890 if not is_bool_dtype(dt): -> 5891 raise ValueError(msg.format(dtype=dt)) 5892 5893 cond = cond.astype(bool, copy=False) ValueError: Boolean array expected for the condition, not ...