Given a Integers String, composed of negative and positive numbers, convert to integer list.
Input : test_str = ‘4 5 -3 2 -100 -2’
Output : [4, 5, -3, 2, -100, -2]
Explanation : Negative and positive string numbers converted to integers list.Input : test_str = ‘-4 -5 -3 2 -100 -2’
Output : [-4, -5, -3, 2, -100, -2]
Explanation : Negative and positive string numbers converted to integers list.
Method #1 : Using list comprehension + int() + split()
In this, we split integers using split() and int() is used to integral conversion. Elements inserted in List using list comprehension
Python3
# Python3 code to demonstrate working of # Integers String to Integer List # Using list comprehension + int() + split() import string # initializing string test_str = '4 5 -3 2 -100 -2 -4 9' # printing original string print("The original string is : " + str(test_str)) # int() converts to required integers res = [int(ele) for ele in test_str.split()] # printing result print("Converted Integers : " + str(res)) |
The original string is : 4 5 -3 2 -100 -2 -4 9 Converted Integers : [4, 5, -3, 2, -100, -2, -4, 9]
Method #2 : Using map() + int()
In this, the task of extension of logic of integer conversion is done using map().
Python3
# Python3 code to demonstrate working of # Integers String to Integer List # Using map() + int() import string # initializing string test_str = '4 5 -3 2 -100 -2 -4 9' # printing original string print("The original string is : " + str(test_str)) # int() converts to required integers # map() extends logic of int to each split res = list(map(int, test_str.split())) # printing result print("Converted Integers : " + str(res)) |
The original string is : 4 5 -3 2 -100 -2 -4 9 Converted Integers : [4, 5, -3, 2, -100, -2, -4, 9]
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