How to Convert Types of Variables in Python?

In Python, you can convert the types of variables using built-in functions or methods specific to each type. Here are some common type conversion methods:

1. Integer to String: Use the str() function or the format() method to convert an integer to a string.

num = 42
string_num = str(num)

2. String to Integer: Use the int() function to convert a string to an integer. If the string contains non-numeric characters, a ValueError will be raised.

string_num = "42"
num = int(string_num)

3. String to Float: Use the float() function to convert a string to a float. If the string cannot be converted to a valid float, a ValueError will be raised.

string_num = "3.14"
float_num = float(string_num)

4. Float to Integer: Use the int() function to convert a float to an integer. This function truncates the decimal part of the float.

float_num = 3.14
int_num = int(float_num)

5. String to Boolean: Use the bool() function to convert a string to a boolean value. The conversion rules are as follows:
   • "True" or "true" (case-insensitive) will be converted to True.
   • "False" or "false" (case-insensitive) will be converted to False.
   • Other non-empty strings will be converted to True.
   • An empty string will be converted to False.

string_bool = "True"
bool_value = bool(string_bool)

6. Integer to Float: An integer can be implicitly converted to a float when used in float arithmetic operations. However, if you need an explicit conversion, you can use the float() function.

num = 42
float_num = float(num)

7. Float to String: Use the str() function or string formatting to convert a float to a string.

float_num = 3.14
string_num = str(float_num)

These are just a few examples of common type conversions in Python. Depending on the specific requirements, you may need to use additional functions or methods for more complex conversions or handle specific cases.