What is python import

Python's import is a very frequently used operation, which is an operation of using the code of another module in one module (almost all languages ​​have similar statements). The import statement is the most commonly used method, but it is not the only method. There are also importlib.import_module() and __import__() , etc.

import does two things:

● Search for the module with the name (in fact, the built-in __import__() method is used) and then initialize an object

● Bind the result to a local variable name (the default is the name of this module).

means that these two sentences are equivalent: import package as pk and pg = __import__('package')

It is worth noting that only calling __import__() will only execute Search actions, initialize the module object, and finally discard the object (because there is no assignment operation). It is easy to confuse the built-in __imoprt__() method with the import statement.

Related recommendations: "Python Tutorial"

The above is the detailed content of What is python import. For more information, please follow other related articles on the PHP Chinese website!