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snippets/python/s/sum-of-powers.md

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+---
+title: Sum of powers
+type: snippet
+language: python
+tags: [math]
+cover: river-flow
+dateModified: 2020-11-02T19:28:35+02:00
+---
+
+Returns the sum of the powers of all the numbers from `start` to `end` (both inclusive).
+
+- Use `range()` in combination with a list comprehension to create a list of elements in the desired range raised to the given `power`.
+- Use `sum()` to add the values together.
+- Omit the second argument, `power`, to use a default power of `2`.
+- Omit the third argument, `start`, to use a default starting value of `1`.
+
+```py
+def sum_of_powers(end, power = 2, start = 1):
+  return sum([(i) ** power for i in range(start, end + 1)])
+```
+
+```py
+sum_of_powers(10) # 385
+sum_of_powers(10, 3) # 3025
+sum_of_powers(10, 3, 5) # 2925
+```