Python Type Casting
Python allows you to convert one data type into another through type conversion (also known as type casting). There are two types of type conversion in Python:
Implicit Type Conversion: Python automatically converts one data type to another (from a smaller data type to a larger data type) without user intervention.
Explicit Type Conversion: The user explicitly converts one data type to another using predefined functions which are as follows:
| Function | Description | Example |
|---|---|---|
| int() | Converts a value to an integer | int(12.9) → 12 |
| float() | Converts a value to a float | float(10) → 10.0 |
| str() | Converts a value to a string | str(123) → “123” |
1. int(): Converts a string to an integer
age = 25 # Here, ‘age’ is a variable, and ’25’ is its value.
roll_no_string = “123”
roll_no = int(roll_no_string) # roll_no is 123
print(roll_no) # Output: 123
2. float(): Converts a string to a float and double both by value
weight_string = “55.5”
weight = float(weight_string) # weight is 55.5
print(weight) # Output: 55.5
pi_string = “3.14”
pi_value = float(pi_string) # pi_value is 3.14
print(pi_value) # Output: 3.14
3. str(): Converts a number to a string
pi_value = 3.14159
pi_string_value = str(pi_value)
print(“ToString() output: ” + pi_string_value)
# Output: “ToString() output: 3.14159”
4. type(): Returns the type of the current variable
pi_value = 3.14159
print(type(pi_value))
# Output: <class ‘float’>”
Task:
1. Write a program to convert the following string to an integer.
2. Write a program to convert the following string to a float.
3. Write a program to convert the following string to a double.
4. Write a program to convert the following string to a decimal.
5. Write a program to convert any double value to a string using the ToString method and print the result:
6. Write a program to print the type of any variable:
7. Write a program to check whether the following two double values are equal using the == method and print the result:
8. Write a program to compare the following two double values using the == method and print the result:
9. Write a program to perform the following mathematical operations on the given integers and print the results:
int a = 10; int b = 5;
Subtraction
Addition
Multiplication
Division
