? Casting in Python (Type Conversion)

Casting in Python is the process of converting one data type into another. Python provides built-in functions for explicit type conversion.

? Types of Casting

1?? Integer Casting (int())

Converts values to an integer.

print(int(3.9))     # 3 (Float to Int - removes decimal)print(int("10"))    # 10 (String to Int)print(int(True))    # 1 (Boolean to Int)print(int(False))   # 0 (Boolean to Int)

2?? Float Casting (float())

Converts values to a floating-point number.

print(float(5))     # 5.0 (Int to Float)print(float("3.14"))  # 3.14 (String to Float)print(float(True))  # 1.0 (Boolean to Float)

3?? String Casting (str())

Converts values to a string.

print(str(100))     # "100" (Int to String)print(str(3.14))    # "3.14" (Float to String)print(str(True))    # "True" (Boolean to String)

4?? Boolean Casting (bool())

Converts values to True or False.
? Falsy Values: 0, 0.0, "", [], {}, None ? False
? Truthy Values: Everything else ? True

print(bool(0))      # Falseprint(bool(1))      # Trueprint(bool(""))     # Falseprint(bool("Hello"))  # Trueprint(bool([]))     # False (Empty list)print(bool([1, 2])) # True (Non-empty list)

5?? List, Tuple, Set Casting

Convert between different data structures.

print(list("abc"))       # ['a', 'b', 'c'] (String to List)print(tuple([1, 2, 3]))  # (1, 2, 3) (List to Tuple)print(set([1, 2, 2, 3])) # {1, 2, 3} (List to Set - removes duplicates)

? Key Takeaways

? Use int(), float(), str(), and bool() for number and string conversions.
? Use list(), tuple(), set() for data structure conversions.
? Be careful when converting non-numeric strings to numbers (e.g., int("abc") will cause an error).

Want an example of a specific type? ?