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1. Print Numbers 1–1002. Print Even Numbers in Range3. Print Odd Numbers in Range4. Sum of Digits5. Reverse Digits of a Number6. Calculate Factorial (Loop)7. Fibonacci Series8. Palindrome Number Check9. Count Digits in a Number10. GCD of Two Numbers (Loop)11. LCM of Two Numbers (Loop)12. Print Prime Numbers in Range13. Count Prime Numbers in Range14. Check Composite Number15. Power of 2 Checker16. Print Number Pattern17. Print Star Pattern18. Armstrong Numbers in Range19. Strong Numbers in Range20. Sum of Series 1/1 + 1/2 + … + 1/N21. Print Multiplication Series22. Print Pyramid Pattern23. Print Inverted Pyramid Pattern24. Print Floyd's Triangle25. Print Pascal's Triangle

Sum of Series 1/1 + 1/2 + … + 1/N in Python

Compute the sum of the harmonic series up to N terms.

BeginnerLoop ProgramsExample 20 of 25
sum-of-series-1-1-1-2-1-n.py
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1# Program to compute sum of series 1/1 + 1/2 + ... + 1/N
2

3n = int(input("Enter a positive integer N: "))
4

5if n <= 0:
6    print("Please enter a positive integer.")
7else:
8    total = 0.0
9    for i in range(1, n + 1):
10        total += 1 / i
11    print(f"Sum of series up to 1/{n} is {total}")

Output

Enter a positive integer N: 5
Sum of series up to 1/5 is 2.283333333333333

What's going on

We add each reciprocal 1/i in a loop from 1 to N, accumulating the sum in a float.

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