Python | Changing variable types through type conversion

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Type conversion

Type conversion, also known as type casting, is the process of changing the data type of a variable or expression in Python. Python is a dynamically-typed language, which means that the data type of a variable is determined at runtime based on the value assigned to it.

There are several built-in functions in Python that allow you to perform type conversion, including:

int(): converts a value to an integer
float(): converts a value to a floating-point number
str(): converts a value to a string
bool(): converts a value to a boolean

Here's an example of using the int() function to convert a string to an integer:

num_str = "123"

num_int = int(num_str)

print(num_int)

In this example, the int() function is used to convert the string "123" to the integer 123.

It's important to note that not all type conversions are possible or sensible. For example, you can't convert a string that doesn't represent a valid number to an integer, and converting a string that represents a sentence to an integer wouldn't make sense. In these cases, Python will raise a ValueError or a TypeError to indicate that the conversion is not possible.

Type conversion is a common operation in Python and is used in many applications, such as input validation, data processing, and data analysis.