Sometimes, while working with tuple, we can have a problem in which, we need to convert a tuple to floating-point number in which first element represents integer part and next element represents a decimal part. Let’s discuss certain way in which this can be achieved.
Method : Using join() + float() + str() + generator expression The combination of above functionalities can solve this problem. In this, we 1st convert the tuple elements into a string, then join them and convert them to desired integer.
Python3
# Python3 code to demonstrate working of # Convert tuple to float # using join() + float() + str() + generator expression # initialize tuple test_tup = (4, 56) # printing original tuple print("The original tuple : " + str(test_tup)) # Convert tuple to float # using join() + float() + str() + generator expression res = float('.'.join(str(ele) for ele in test_tup)) # printing result print("The float after conversion from tuple is : " + str(res)) |
The original tuple : (4, 56) The float after conversion from tuple is : 4.56
Method #2 : Using format() + join()
This method is similar to the above method but instead of using generator expression, we use the join() function with format() method to convert the tuple elements into a string.
Python3
# Python3 code to demonstrate working of# Convert tuple to float# using format() + join()# initialize tupletest_tup = (4, 56)# printing original tuple print("The original tuple : " + str(test_tup))# Convert tuple to float# using format() + join()res = float("{}.{}".format(*test_tup))# printing resultprint("The float after conversion from tuple is : " + str(res))#This code is contributed by Edula Vinay Kumar Reddy |
The original tuple : (4, 56) The float after conversion from tuple is : 4.56
Time complexity : O(1)
Auxiliary Space : O(1)
Method #3: Using math and tuple unpacking
- Import the math module
- Unpack the tuple into separate variables using tuple unpacking
- Divide the first element by 10^d, where d is the number of digits in the second element
- Add the quotient from step 3 to the second element, to get a float
Python3
import math# initialize tupletest_tup = (4, 56)# printing original tupleprint("The original tuple : " + str(test_tup))# Convert tuple to float using math and tuple unpackinga, b = test_tupres = a + (b / math.pow(10, len(str(b))))# round the result to 2 decimal placesres = round(res, 2)# printing resultprint("The float after conversion from tuple is : " + str(res)) |
The original tuple : (4, 56) The float after conversion from tuple is : 4.56
Time complexity: O(1)
Auxiliary space: O(1)
