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what is type conversion in python? Explain with the suitable example.

Data Compression: Mastering Type Conversion in Python

What is Type Conversion?

  • Type conversion, also known as type casting, is the process of changing a variable's data type from one to another.
  • Python supports both implicit (automatic) and explicit (manual) type conversion.

Implicit Type Conversion

  • Python automatically converts data types in certain situations to prevent errors.
  • Example: Adding an integer to a float results in a float.

Explicit Type Conversion

  • We use built-in functions like `int()`, `float()`, `str()`, `bool()` etc. to explicitly change data types.
  • Example: Converting a string "10" to an integer using `int("10")`.

Example: Data Compression Context

  • Imagine you're storing compressed file sizes (originally floats) in a database designed for integers.
  • Explicit type conversion (using `int()`) would truncate the decimal part, losing precision but saving space. This is a type of lossy compression.
  • Converting from a larger data type (e.g., float) to a smaller one (e.g., int) generally leads to data compression (size reduction), albeit potentially lossy.
  • Conversely, converting from a smaller type to a larger one (e.g., int to float) increases data size and may introduce loss in precision in the context of data compression.

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