centroids = zeros((k, dim)) for i in range(k): index = int(random.uniform(0, numSamples)) centroids[i, :] = dataSet[index, :] return centroids # k-means cluster def kmeans(dataSet, k): numSamples = dataSet.shape[0] # first column stores which cluster this sample belongs to, #...
When you did this, its name was set to __main__, which means that relative imports within it will fail, because its name does not reveal that it is in a package. Note that this will also happen if you run Python from the same directory where a module is, and then try to import ...
The Package type is defined as Union[str, ModuleType]. This meansthat where the function describes accepting a Package, you can pass ineither a string or a module. Module objects must have a resolvablespec.submodule_search_locations that is not None. importlib.resources.Resource This type descr...
This means all semantics of the function are derived from importlib.__import__(). The most important difference between these two functions is that import_module() returns the specified package or module (e.g. pkg.mod), while __import__() returns the top-level package or module (e.g....
level specifies whether to use absolute or relative imports. 0 (the default) means only perform absolute imports. Positive values for level indicate the number of parent directories to search relative to the directory of the module calling __import__() (see PEP 328 for the details). ...
但是import多次载入的都是同一个副本,而reload可以在不中止Python程序的情况下重新载入模块(热加载)。 这说明,一旦模块发生了变化,模块新的特性能够通过reload来呈现,而import不可以。 3. 传递性不同 reload加载模块时只重新加载该模块,而不会加载该模块import的其他模块; ...
loader, 'create_module'): # If create_module() returns `None` then it means default # module creation should be used. module = spec.loader.create_module(spec) elif hasattr(spec.loader, 'exec_module'): raise ImportError('loaders that define exec_module() ' 'must also define create_...
filtered_text = ' '.join([word for word in text.split() if word not in stop_words]) print(filtered_text) 1.2 词汇介绍 词汇删除包括分词、词性标注、实体识别等步骤。分词是指将文本拆分为一个单词或短语。 Python 复制代码 import nltk
Importing modules at the top of the script, is importing the module into the global scope, which means that any functions will be able to use it. Alocal importis when you import a module into local scope, which means that it exists only within the block that it was loaded in. ...
So, in the Python program filemy_rand_int.pywe would import therandommodule to generate random numbers in this manner: my_rand_int.py importrandom Copy When we import a module, we are making it available to us in our current program as a separate namespace. This means that we will hav...