How to Use IPython Autoreload for Faster Coding?

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IPython’s autoreload extension is a useful tool for faster coding, as it automatically reloads modules that have been modified, without having to restart the kernel or manually reload the module.

To use autoreload, you first need to load the extension using the %load_ext magic command:

%load_ext autoreload

You can then enable autoreload for specific modules using the %autoreload magic command:

%autoreload 2

The value 2 indicates that autoreload should reload all modules imported with the import statement, as well as all modules that are imported by other modules.

Here’s an example of how to use autoreload:

# Load the autoreload extension
%load_ext autoreload

# Enable autoreload
%autoreload 2

# Import a module
import my_module

# Modify the module
# ...

# Call a function from the module

In this example, we first load the autoreload extension using the %load_ext magic command. We then enable autoreload for all imported modules using the %autoreload magic command.

We then import a module called my_module, and modify it. Since autoreload is enabled, any changes we make to the module will automatically be reloaded.

Finally, we call a function from the module using my_module.my_function(), which will use the modified version of the module if it has been reloaded.

Note that autoreload can cause unexpected behavior if you are not careful, especially when modifying global state. For example, if you modify a global variable in a module, and then reload the module, the modified value of the variable will be lost. Therefore, it’s important to use autoreload judiciously and with caution.

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