It's subjective to say which of these web development tools is the easiest as it depends on individual skills, preferences, and prior experience.

However, Flask is often considered to be one of the easiest web development frameworks due to its minimalistic and flexible design. Flask provides a simple and straightforward way to get started with web development, allowing developers to build a basic website or web application with a few lines of code.

Bottle.py and CherryPy are also relatively simple to use, but they may be limited in terms of features and functionality compared to Flask or Django.

On the other hand, Django is a more complex and feature-rich framework that provides a lot of built-in functionality and can be more challenging to learn, especially for beginners.

Ultimately, the ease of use of a web development tool depends on a variety of factors such as the size and complexity of the project, personal preferences, and prior experience.
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