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Python sum() function is used to get the sum of numbers of an iterable.
Python sum() function syntax is:
start is an optional number with default value of 0. If start is provided, then the sum of start and all the numbers in the iterable is returned.
s = sum([1, 2, 3]) print(s) s = sum([1, 2, 3], 10) print(s)
Note that sum() method doesn’t take keyword arguments, so if we write
sum([1, 2, 3], start=10) then it will throw exception as
TypeError: sum() takes no keyword arguments.
Since sum accepts iterable as argument, we can pass tuple, bytes of numbers too.
s = sum(bytes([1, 2])) print(s) s = sum(bytearray([1, 2]), 10) print(s) # sum of integers in different formats, tuple of numbers s = sum((1, 0b11, 0o17, 0xFF)) print(s) s = sum((1, 0b11, 0o17, 0xFF), 0xF) print(s)
3 13 274 289
s = sum([1.5, 2.5, 3]) print(s)
7.0 If you want to add floating point values with extended precision, you can use
sum() function works with complex numbers too.
s = sum([1 + 2j, 3 + 4j]) print(s) s = sum([1 + 2j, 3 + 4j], 2 + 2j) print(s) s = sum([1 + 2j, 2, 1.5 - 2j]) print(s)
(4+6j) (6+8j) (4.5+0j)
You can checkout complete python script and more Python examples from our GitHub Repository.
Reference: Official Documentation
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