Python adds the current directory to its search path when the interpreter is entered interactively; if it finds the to-be-imported module in the current directory, it will not know that that directory is part of a package, and the package information will not become part of the module's ...
module_spec = importlib.util.find_spec(module_name) if module_spec is None: print("Module: {} not found".format(module_name)) return None else: print("Module: {} can be imported".format(module_name)) return module_spec def import_module_from_spec(module_spec): """ Import the module...
上述的meta path finders/importers都实现了find_spec(fullname, path, target=None)函数,第一个参数是导入模块的fully qualified name;当导入顶层模块(top-level module)时第二个参数为None,反之为模块上一级的__path__属性(参考例子),第三个参数为一个已经存在的作为导入模块目标的module object (当且仅当调用...
line 1, in <module> from ..package1 import module2 # 试图在顶级包(top-level package)之外进行相对导入 ValueError: attempted relative import beyond top-level package
While some of the examples you see below may not be WTFs in the truest sense, but they'll reveal some of the interesting parts of Python that you might be unaware of. I find it a nice way to learn the internals of a programming language, and I believe that you'll find it ...
which is in/usr/lib/python2.7/dist-packages/. Again, according topy.sys.path, this directory is included in the search path, however, importing the package fails ("Import argument 'py.fabio' cannot be found or cannot be imported."). I hope someone has an advice how to solve this proble...
def askForPlayerMove(board, robots, playerPosition): """Returns the (x, y) integer tuple of the place the player moves next, given their current location and the walls of the board.""" playerX, playerY = playerPosition # Find which directions aren't blocked by a wall: q = 'Q' if...
查找模块规格时,_find_and_load() 方法会遍历 sys.meta_path ,逐个调用 find_spec() 方法,直到找到对应规格。如果最后没有找到,_find_and_load() 方法会抛出 ModuleNotFoundError。 默认情况下,sys.meta_path 存储着三种查找器: BuiltinImporter 负责查找内置模块; FrozenImporter 负责查找冻结模块; PathFinder ...
If you can’t find pip in any location on your system, then you may consider reinstalling pip. Instead of running your system pip directly, you can also run it as a Python module. In the next section, you’ll learn how. Running pip as a Module When you run your system pip directly...
If the script is embedded in the toolbox, the location is the folder containing the toolbox. If the script is in a Python toolbox, the location is the folder containing the Python toolbox. Note: Relative paths and folders The following technique of finding data relative to the location of...