Python Program to Display Powers of 2

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In this example, you will learn how to compute the powers of 2 using three different methods.

  1. Using lambda function
  2. Using a named function
  3. Using a for loop

Using the Anonymous lambda function

In this example, we pass a lambda function that computes the square of a number to a map function and returns a list with the square of each number

terms = 10

result = list(map(lambda x: 2 ** x, range(terms)))

print("Using Lambda Function:")
for i in range(terms):
    print("2 raised to power", i, "is", result[i])

Output

Using Lambda Function:
2 raised to power 0 is 1
2 raised to power 1 is 2
2 raised to power 2 is 4
2 raised to power 3 is 8
2 raised to power 4 is 16
2 raised to power 5 is 32
2 raised to power 6 is 64
2 raised to power 7 is 128
2 raised to power 8 is 256
2 raised to power 9 is 512

Here we use an anonymous function, also known as a lambda function, to display the powers of 2. here, we define a lambda function that takes an argument n and returns 2 raised to the power of n. We then use a for loop to iterate through a range of numbers from 0 to 10 and call the lambda function for each number, printing out the result.

Using a named function

# using named function
def power_of_two(n):
    return lambda x: x**n

terms = 10

result = list(map(power_of_two(2), range(terms)))

print("Using a Named Function:")
for i in range(terms):
    print("2 raised to power", i, "is", result[i])

Output

Using a Named Function:
2 raised to power 0 is 0
2 raised to power 1 is 1
2 raised to power 2 is 4
2 raised to power 3 is 9
2 raised to power 4 is 16
2 raised to power 5 is 25
2 raised to power 6 is 36
2 raised to power 7 is 49
2 raised to power 8 is 64
2 raised to power 9 is 81

Using Python for loops

# using for loop
terms = 10

result = []

for i in range(terms):
    result.append(2 ** i)

print("Using For Loop:")
for i in range(terms):
    print("2 raised to power", i, "is", result[i])

Using For Loop:
2 raised to power 0 is 1
2 raised to power 1 is 2
2 raised to power 2 is 4
2 raised to power 3 is 8
2 raised to power 4 is 16
2 raised to power 5 is 32
2 raised to power 6 is 64
2 raised to power 7 is 128
2 raised to power 8 is 256
2 raised to power 9 is 512

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