1. Introduction
In Python, the terms script and module are commonly used, and it's important to understand the difference. A Python script is a file containing Python code that is intended to be directly executed. It could be a simple program or a batch job. A Python module, on the other hand, is a Python file that's intended to be imported into scripts or other modules. It can contain functions, classes, and variables, as well as runnable code.
2. Key Points
1. Purpose: Scripts are executed directly, and modules are imported and used by other modules or scripts.
2. Reusability: Modules are designed to be reusable, scripts typically solve specific problems.
3. Execution: When a script is run, it is the main entry point of the program, whereas a module is typically not run directly.
4. Contents: Both can contain functions, classes, and Python code, but modules are intended to be imported.
3. Differences
| Characteristic | Python Script | Python Module |
|---|---|---|
| Purpose | Executed directly | Imported and used by other files |
| Reusability | Specific problem-solving | Designed to be reusable |
| Execution | Main entry point | Not run directly |
| Contents | Can contain functions, classes, etc. | Contains functions, classes for import |
4. Example
# Python Script Example (script.py)
print("This is a Python script.")
# Python Module Example (module.py)
def module_function():
return "This is a function from a Python module."
Output:
Script Output when executed: This is a Python script. Module Output when imported and function called: This is a function from a Python module.
Explanation:
1. The Python script script.py is run as a standalone program.
2. The Python module module.py contains a function that can be imported and used in other Python files.
5. When to use?
- Use a Python script when you want to run a program directly to perform a task.
- Use a Python module when you're creating reusable code that you want to share between scripts or other modules.
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