Module: A Python module is a file that you intend to import from within another module or a script, or from the interactive interpreter. Script: A Python script is a file that you intend to execute from the command line to accomplish a task. However, there are slight differences in meaning that emphasize the purpose of a piece of code:įile: Typically, a Python file is any file that contains code. Practically, there isn’t much difference between them. You’ll see the words file, module, and script used throughout this article. You can read more about repr() in the Python documentation.
This example uses repr() to emphasize that the value of _name_ is a string. In Python, repr() displays the printable representation of an object. The third print() will first print the phrase The value of _name_ is, and then it will print the representation of the _name_ variable using Python’s built-in repr(). The first two print some introductory phrases. In this file, there are three calls to print() defined. Print ( "This is my file to test Python's execution methods." ) print ( "The variable _name_ tells me which context this file is running in." ) print ( "The value of _name_ is:", repr ( _name_ ))
What the special _name_ variable is and how Python defines it.Python programmers have come up with several conventions to define this starting point.īy the end of this article, you’ll understand: Nevertheless, having a defined starting point for the execution of a program is useful for understanding how a program works. On the other hand, the Python interpreter executes scripts starting at the top of the file, and there is no specific function that Python automatically executes. This function is usually called main() and must have a specific return type and arguments according to the language standard. Many programming languages have a special function that is automatically executed when an operating system starts to run a program. Watch it together with the written tutorial to deepen your understanding: Defining Main Functions in Python Watch Now This tutorial has a related video course created by the Real Python team.
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