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Given the following text description, write Python code to implement the functionality described below step by step
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Description:
 filter
The function filter(function, list) offers a convenient way to filter out all the elements of an iterable, for which the function returns True. 
The function filter(function(),l) needs a function as its first argument. The function needs to return a Boolean value (either True or False). This function will be applied to every element of the iterable. Only if the function returns True will the element of the iterable be included in the result.
Lets see some examples
Step1:  Now let's filter a list of numbers. Note
Step2:  filter() is more commonly used with lambda functions, this because we usually use filter for a quick job where we don't want to write an entire function. Lets repeat the example above using a lambda expression
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Python Code:
#First let's make a function
def even_check(num):
    if num%2 ==0:
        return True
Explanation: filter
The function filter(function, list) offers a convenient way to filter out all the elements of an iterable, for which the function returns True. 
The function filter(function(),l) needs a function as its first argument. The function needs to return a Boolean value (either True or False). This function will be applied to every element of the iterable. Only if the function returns True will the element of the iterable be included in the result.
Lets see some examples:
End of explanation
lst =range(20)
filter(even_check,lst)
Explanation: Now let's filter a list of numbers. Note: putting the function into filter without any parenthesis might feel strange, but keep in mind that functions are objects as well.
End of explanation
filter(lambda x: x%2==0,lst)
Explanation: filter() is more commonly used with lambda functions, this because we usually use filter for a quick job where we don't want to write an entire function. Lets repeat the example above using a lambda expression:
End of explanation
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