30 seconds of python

Math

Click on a snippet's name to view its code.

average

Returns the average of two or more numbers.

Use sum() to sum all of the args provided, divide by len(args).

average_by

Returns the average of a list, after mapping each element to a value using the provided function.

Use map() to map each element to the value returned by fn. Use sum() to sum all of the mapped values, divide by len(lst).

clamp_number

Clamps num within the inclusive range specified by the boundary values a and b.

If num falls within the range, return num. Otherwise, return the nearest number in the range.

degrees_to_rads

Converts an angle from degrees to radians.

Use math.pi and the degrees to radians formula to convert the angle from degrees to radians.

digitize

Converts a number to an array of digits.

Use map() combined with int on the string representation of n and return a list from the result.

factorial

Calculates the factorial of a number.

Use recursion. If num is less than or equal to 1, return 1. Otherwise, return the product of num and the factorial of num - 1. Throws an exception if num is a negative or a floating point number.

fibonacci

Generates an array, containing the Fibonacci sequence, up until the nth term.

Starting with 0 and 1, use list.append() to add the sum of the last two numbers of the list to the end of the list, until the length of the list reachesn. Ifnis less or equal to0, return a list containing0`.

gcd

Calculates the greatest common divisor of a list of numbers.

Use reduce() and math.gcd over the given list.

in_range

Checks if the given number falls within the given range.

Use arithmetic comparison to check if the given number is in the specified range. If the second parameter, end, is not specified, the range is considered to be from 0 to start.

is_divisible

Checks if the first numeric argument is divisible by the second one.

Use the modulo operator (%) to check if the remainder is equal to 0.

is_even

Returns True if the given number is even, False otherwise.

Checks whether a number is odd or even using the modulo (%) operator. Returns True if the number is even, False if the number is odd.

is_odd

Returns True if the given number is odd, False otherwise.

Checks whether a number is even or odd using the modulo (%) operator. Returns True if the number is odd, False if the number is even.

lcm

Returns the least common multiple of two or more numbers.

Define a function, spread, that uses either list.extend() or list.append() on each element in a list to flatten it. Use math.gcd() and lcm(x,y) = x * y / gcd(x,y) to determine the least common multiple.

max_by

Returns the maximum value of a list, after mapping each element to a value using the provided function.

Use map() with fn to map each element to a value using the provided function, use max() to return the maximum value.

median

Finds the median of a list of numbers.

Sort the numbers of the list using list.sort() and find the median, which is either the middle element of the list if the list length is odd or the average of the two middle elements if the list length is even.

min_by

Returns the minimum value of a list, after mapping each element to a value using the provided function.

Use map() with fn to map each element to a value using the provided function, use min() to return the minimum value.

rads_to_degrees

Converts an angle from radians to degrees.

Use math.pi and the radian to degree formula to convert the angle from radians to degrees.

sum_by

Returns the sum of a list, after mapping each element to a value using the provided function.

Use map() with fn to map each element to a value using the provided function, use sum() to return the sum of the values.