What is the output of the code:mylist =[0, 5, 2, 0, 'codetantra', '', []]print(list(filter(bool, mylist)))Options[0, 0, ]Error[5, 2, 'codetantra'][0, 5, 2, 0, ‘codetantra’, ”, []]
Question
What is the output of the code:mylist =[0, 5, 2, 0, 'codetantra', '', []]print(list(filter(bool, mylist)))Options[0, 0, ]Error[5, 2, 'codetantra'][0, 5, 2, 0, ‘codetantra’, ”, []]
Solution
The output of the code will be [5, 2, 'codetantra'].
Here's the step by step explanation:
-
The
filter()function in Python takes in a function and a list as arguments. This function is used to filter out the elements of a sequence. -
The
bool()function converts a value to Boolean (True or False) using the standard truth testing procedure. -
In this case,
filter(bool, mylist)is used. This means that thefilter()function will filter out all the elements inmylistthat return False when passed to thebool()function. -
The
bool()function returns False for the following values: None, False, zero of any numeric type, any empty sequence (for example, '', (), []), and any empty mapping (for example, {}). -
Therefore, the elements 0, '', and [] in
mylistwill be filtered out because they return False when passed to thebool()function. -
The remaining elements (5, 2, 'codetantra') return True when passed to the
bool()function, so they are included in the output list. -
So, the final output of the code will be [5, 2, 'codetantra'].
Similar Questions
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