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Python - Change the signs of elements of tuples in a list
When it is required to change the signs of the elements in a list of tuple, a simple iteration, the ‘abs’ method and the ‘append’ method can be used.
Example
Below is a demonstration of the same
my_list = [(51, -11), (-24, -24), (11, 42), (-12, 45), (-45, 26), (-97, -4)]
print("The list is :")
print(my_list)
my_result = []
for sub in my_list:
my_result.append((abs(sub[0]), -abs(sub[1])))
print("The result is :")
print(my_result)Output
The list is : [(51, -11), (-24, -24), (11, 42), (-12, 45), (-45, 26), (-97, -4)] The result is : [(51, -11), (24, -24), (11, -42), (12, -45), (45, -26), (97, -4)]
Explanation
A list of tuple is defined and is displayed on the console.
An empty list is defined.
The original list is iterated over.
The ‘abs’ method is used to get the absolute value of the negative elements of the list.
This result is appended to the empty list.
This is displayed as output on the console.
Updated on: 15-Sep-2021
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