Function

Author: Rai Muhammad Haider

Functions.py

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+# Function with default parameter
+def default_parameter(city='Lahore'):
+    print(city, 'is Your city')
+
+default_parameter('Okara')
+
+
+# Function with unknown number of positional arguments (*args)
+def unknown_parameters(*name):
+    print('The name of the winner is', name[1])
+
+unknown_parameters('Ali', 'Haider', 'Hafiz')
+
+
+# Function with keyword arguments
+def my_function(child3, child2, child1):
+    print("The youngest child is", child1)
+
+my_function(child1="Emil", child2="Tobias", child3="Linus")
+
+
+# Passing a dictionary to a function
+students = {
+    'name': 'Ali',
+    'age': 21,
+}
+
+def passing_dict(info):
+    for key in info:
+        print(key, ':', info[key])
+
+passing_dict(students)
+
+
+# Basic function returning square
+def square(number):
+    return number ** 2
+
+print(square(9))
+
+
+# Function for multiplication
+def multiply(q, w):
+    return q * w
+
+print(multiply(8, 2))
+print(multiply('a', 2))
+print(multiply(2, 'a'))
+
+
+# Function to calculate area and circumference of a circle
+import math
+
+def circle(radius):
+    area = math.pi * (radius ** 2)
+    circumference = 2 * math.pi * radius
+    return area, circumference
+
+a, c = circle(3)
+print('Area:', round(a, 2), 'Circumference:', round(c, 2))
+
+
+# Function with default greeting
+def default_greeting(greet='Good morning'):
+    print('Hey Sir!', greet)
+
+default_greeting()
+
+
+# Lambda function (anonymous function)
+cube = lambda x: x ** 3
+print(cube(2))
+
+
+# Sum using *args
+def sum_all(*args):
+    return sum(args)
+
+print(sum_all(2, 4, 5, 2))
+
+
+# Function with keyword arguments (**kwargs)
+def print_kwargs(**kwargs):
+    for key, value in kwargs.items():
+        print(f"{key}: {value}")
+
+print_kwargs(name='Ali', age=21, power='Lazer')
+
+
+# Generator function using yield
+def even_generator(limit):
+    for i in range(2, limit + 1, 2):
+        yield i
+
+for num in even_generator(10):
+    print(num)
+
+
+# Recursive function to calculate factorial
+def factorial(n):
+    if n == 0:
+        return 1
+    else:
+        return n * factorial(n - 1)
+
+print(factorial(4))