Functions in Python-3

1. Why Do We Need Functions?

Functions provide many benefits:

1. Code Reusability: We can use the same code multiple times.
2. Easy Maintenance: Changes can be made easily.
3. Readability: Code becomes easier to understand.
4. Modularity: Large programs can be divided into small parts.
5. Easy Testing: We can test each function separately.

5. Predefined Functions
Python already provides some built-in functions. We can use them directly.

Examples:
print("Good Morning")

print(bin(4))
print(bin(5))

Output:

Good Morning
0b100
0b101

• print() displays output.
• bin() converts an integer into a binary string.