Python | Convert tuple to float value (original) (raw)

Last Updated : 23 Apr, 2023

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))

`

Output

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 tuple

test_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 result

print("The float after conversion from tuple is : " + str(res)) #This code is contributed by Edula Vinay Kumar Reddy

`

Output

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

1. Import the math module
2. Unpack the tuple into separate variables using tuple unpacking
3. Divide the first element by 10^d, where d is the number of digits in the second element
4. Add the quotient from step 3 to the second element, to get a float Python3 `

import math

initialize tuple

test_tup = (4, 56)

printing original tuple

print("The original tuple : " + str(test_tup))

Convert tuple to float using math and tuple unpacking

a, b = test_tup res = a + (b / math.pow(10, len(str(b))))

round the result to 2 decimal places

res = round(res, 2)

printing result

print("The float after conversion from tuple is : " + str(res))

`

Output

The original tuple : (4, 56) The float after conversion from tuple is : 4.56

Time complexity: O(1)
Auxiliary space: O(1)