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Title: Python Argparse Default Value Explained with Code Examples
Argparse is a module in Python's standard library that makes it easy to write user-friendly command-line interfaces. One key feature of argparse is the ability to define default values for command-line arguments. In this tutorial, we'll explore how to use default values in argparse with practical examples.
To set default values for command-line arguments, you can use the default parameter when defining the argument. This parameter specifies the default value that will be assigned if the user doesn't provide a value for that argument.
In the example above, we define an argument called --count with a default value of 1. If the user doesn't provide a value for --count on the command line, it will default to 1.
This will print:
Users can override the default value by providing a custom value for the argument when running the script:
This will print:
You can use default values for arguments of different data types, such as integers, floats, strings, and booleans. Here's an example with a string argument:
When run without providing a value for --name, it will default to 'John Doe'.
Default values in argparse provide a convenient way to set initial values for command-line arguments. This flexibility allows users to either accept the default values or override them with their own inputs. By incorporating default values into your argparse-based scripts, you can create more user-friendly and adaptable command-line interfaces for your Python applications.
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Argparse is a module in Python's standard library that makes it easy to write user-friendly command-line interfaces. One key feature of argparse is the ability to define default values for command-line arguments. In this tutorial, we'll explore how to use default values in argparse with practical examples.
To set default values for command-line arguments, you can use the default parameter when defining the argument. This parameter specifies the default value that will be assigned if the user doesn't provide a value for that argument.
In the example above, we define an argument called --count with a default value of 1. If the user doesn't provide a value for --count on the command line, it will default to 1.
This will print:
Users can override the default value by providing a custom value for the argument when running the script:
This will print:
You can use default values for arguments of different data types, such as integers, floats, strings, and booleans. Here's an example with a string argument:
When run without providing a value for --name, it will default to 'John Doe'.
Default values in argparse provide a convenient way to set initial values for command-line arguments. This flexibility allows users to either accept the default values or override them with their own inputs. By incorporating default values into your argparse-based scripts, you can create more user-friendly and adaptable command-line interfaces for your Python applications.
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