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 InitialisationInput = [[10, -11, 222], [42, -222, -412, 99, -87]]Output = [] # Using iterationfor elem in Input: temp = [] for x in elem: if x>0: temp.append(x) Output.append(temp) # printing outputprint("Initial List is :", Input)print("Modified list is :", Output) |
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 InitialisationInput = [[10, -11, 222], [42, -222, -412, 99, -87]] # Using list comprehension and maptemp = map(lambda elem: filter(lambda a: a>0, elem), Input)Output = [[a for a in elem if a>0] for elem in temp] # printing outputprint("Initial List is :", Input)print("Modified list is :", Output) |
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 InitialisationInput = [[10, -11, 222], [42, -222, -412, 99, -87]] # Using list comprehensionOutput = [ [b for b in a if b>0] for a in Input] # printing outputprint("Initial List is :", Input)print("Modified list is :", Output) |
Output:
Initial List is : [[10, -11, 222], [42, -222, -412, 99, -87]] Modified list is : [[10, 222], [42, 99]]
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