1. Create a function that returns the average of a list of numbers

	def average(my_list):
		# your code


	print(average([1 , 2 , 3, 4 , 5])) --> 3


2. Create a function that returns the second maximum number of a list

	def sec_maximum(my_list):
		# your code


	print(sec_maximum([2 , 1 , 5, 2 , 3])) --> 3


2. Create a function that returns the second maximum number of a list

	def sec_maximum(my_list):
		# your code


	print(sec_maximum([2 , 1 , 5, 2 , 3])) --> 3

3. Write a Python function that takes two lists and prints True if they have at least one common member and False otherwise.

	def common(list_1, list_2):
		# your code


	print(common([2 , 1 , 5], [3 , 4 , 1])) --> True
	print(common([2 , 1 , 5], [3 , 4 , 6])) --> True

4. Write a Python function to convert a string of numbers separated by comma eg '1,2,3,4' to a list of numbers eg [1, 2, 3 , 4].

	def get_list(my_string):
		# your code


	print(get_list('1,2,3,4')) --> [1 , 2 , 3 , 4]


5. Write a Python function that returns a specified list after removing even numbers from it.

	def remove_evens(my_list):
		# your code


	print(remove_evens([2 , 1 , 5, 2 , 3])) --> [1 , 5 , 3]


6. Write a Python function to count the number of strings where the string length is 2 or more and the first and last character are same from a given list of strings.

	def good_strings(my_list):
		# your code


	print(good_strings(['abc', 'xyz', 'aba', '1221'])) --> 2