tuple

[buran]

tuple("veysel",) is same as tuple("veysel"). When you pass str as argument to tuple() function it returns tuple of chars:

>>> tuple("veysel")
('v', 'e', 'y', 's', 'e', 'l')
>>>

effectively first snippet is

s=("hello",)
b=s+('v', 'e', 'y', 's', 'e', 'l')
print(b)

In the second example, both s and a are tuples. Note that a is tuple, because of the comma at the end:

>>> a = 'veysel',
>>> type(a)
<class 'tuple'>
>>>