Python | Get positive elements from given list of lists
Given a list of list, the task is to get only positive element from given list. Below are some ways to solve the above problem.
Method #1: Using Iteration
# Python code to get positive # element from list of list # List Initialisation Input = [[10, -11, 222], [42, -222, -412, 99, -87]] Output = [] # Using iteration for elem in Input: temp = [] for x in elem: if x>0: temp.append(x) Output.append(temp) # printing output print("Initial List is :", Input) print("Modified list is :", Output) |
chevron_right
filter_none
Output:
Initial List is : [[10, -11, 222], [42, -222, -412, 99, -87]] Modified list is : [[10, 222], [42, 99]]
Method #2: Using map and list Comprehension
# Python code to get positive element # from list of list # List Initialisation Input = [[10, -11, 222], [42, -222, -412, 99, -87]] # Using list comprehension and map temp = map(lambda elem: filter(lambda a: a>0, elem), Input) Output = [[a for a in elem if a>0] for elem in temp] # printing output print("Initial List is :", Input) print("Modified list is :", Output) |
chevron_right
filter_none
Output:
Initial List is : [[10, -11, 222], [42, -222, -412, 99, -87]] Modified list is : [[10, 222], [42, 99]]
Method #3: Using List Comprehension
# Python code to get positive element # from list of list # List Initialisation Input = [[10, -11, 222], [42, -222, -412, 99, -87]] # Using list comprehension Output = [ [b for b in a if b>0] for a in Input] # printing output print("Initial List is :", Input) print("Modified list is :", Output) |
chevron_right
filter_none
Output:
Initial List is : [[10, -11, 222], [42, -222, -412, 99, -87]] Modified list is : [[10, 222], [42, 99]]
Attention geek! Strengthen your foundations with the Python Programming Foundation Course and learn the basics.
To begin with, your interview preparations Enhance your Data Structures concepts with the Python DS Course.
