python xlrd VS python pillow

• 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.

• Wide Format Support
  Pillow supports a wide range of image file formats including JPEG, PNG, BMP, GIF, and TIFF, which makes it very versatile for various image processing needs.
• Ease of Use
  The library is known for its simplicity and intuitive API, making it easy for beginners to quickly grasp the basics of image manipulation.
• Active Development
  Pillow receives regular updates and community support, ensuring that it stays up-to-date and compatible with the latest Python versions.
• Comprehensive Documentation
  Pillow has extensive documentation which provides clear and helpful guidance for both basic and advanced image processing tasks.
• Integration
  The library integrates well with other Python libraries, which can be advantageous for more complex projects that require multiple dependencies.

Possible disadvantages

• Performance
  For very large images or complex transformations, Pillow might not be the most efficient in terms of performance compared to specialized libraries.
• Limited Advanced Features
  While Pillow is great for basic to moderate image processing tasks, it might lack some advanced features found in more specialized image processing libraries.
• Threading Limitations
  There might be some limitations and issues around threading, which can be a drawback for applications requiring concurrent image processing.
• Learning Curve for Complex Features
  While basic features are easy to use, implementing more complex image manipulation tasks might require a steeper learning curve.

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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

Tracking python pillow since Mar 2021.