Packer VS python xlrd

• Multi-Provider Support
  Packer supports a wide variety of providers such as AWS, Azure, Google Cloud, VMware, and more. This allows for flexibility and the ability to create machine images across different environments.
• Automation
  Packer automates the creation of machine images, eliminating the need for manual image configuration and reducing the potential for human error.
• Script Reusability
  Packer allows for the reuse of scripts and configuration files, enabling a consistent and repeatable process for image creation.
• Parallel Builds
  Packer can build multiple images in parallel, which can significantly speed up the provisioning process.
• Idempotency
  Packer ensures that the output machine image is always an identical result given the same input configuration, reducing the risk of inconsistencies.

Possible disadvantages

• Steep Learning Curve
  The variety of features and flexibility that Packer offers can make it complex and challenging to learn, especially for beginners.
• Limited Debugging Tools
  Packer's debugging tools are not as mature or as integrated as those found in some other DevOps tools, making troubleshooting more difficult.
• Configuration Complexity
  Complex configurations with multiple builders and provisioners can become hard to manage and maintain, leading to potential errors.
• No State Management
  Unlike Terraform, Packer does not manage state, which means users need to handle state management separately if required.
• Dependency on External Tools
  Packer often relies on external scripts and tools for provisioning, which can introduce additional dependencies and complexities.

• Simplicity
  xlrd provides a straightforward and easy-to-use API for reading Excel files, making it accessible for beginners and quick implementations.
• Widely Used
  xlrd has been a popular choice for handling Excel files in Python, which means there is a lot of available documentation and community support.
• Efficient Reading
  It is optimized for reading data from Excel files without loading entire data into memory, which is beneficial for handling large files.

Possible disadvantages

• No Write Support
  xlrd is designed solely for reading, and it does not support writing or modifying Excel files.
• Limited to Older Excel Formats
  With version 2.0 and above, xlrd only supports the older .xls Excel file format and does not support .xlsx files.
• Deprecated Features
  Due to changes in dependencies and updates to Excel formats, some features in xlrd have become deprecated or removed, which can limit its functionality.

No analysis of python xlrd yet.

• Introduction to Top Open Source Virtualization Tools
  www.getfilecloud.com · Aug 2014

  Packer is notably light, high performing, and operates on every major operating system. It assembles and configures all the necessary components for a virtual machine then creates images that run on multiple...

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• After self-hosting my email for twenty-three years I have thrown in the towel. The oligopoly has won.

  And while it is a slight increase in complexity, it can be an overall net gain in functionality, configurability and reliability. Much like Packer is far more reliable and practical than manually making VM images sitting in front of a... Source: about 4 years ago

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• I need to read multiple excel files, extract a column from each and compose a new file

  So to get this out of the way first, xlrd has less features than openpyxl and in addition only works with the old '.xls' format, not the newer '.xlsx' format. Even on the xlrd's Github repo it says: 'Please use openpyxl where you can... '. Source: over 4 years ago

• Sending Bulk SMS using Africas Talking, Python and Excel

  There are few alternative libraries for reading and writing excel files: Pandas, Xlrd , openpyxl among others. In the end I settled for openpyxl as I had the most experience Using it and it had support for .xlsx files. - Source: dev.to / over 5 years ago