Python convert a string to tuple

Question

If I have data like this from a machine learning prediction:

print(prediction) is:

('blood_pressure', '0.99999046')

Then print(type(prediction)) is:

<class 'str'>

How do I convert this to a tuple?

If i do print(tuple(prediction)) this comes out like:

('(', "'", 'b', 'l', 'o', 'o', 'd', '_', 'p', 'r', 'e', 's', 's', 'u', 'r', 'e', "'", ',', ' ', "'", '0', '.', '9', '9', '9', '9', '9', '0', '4', '6', "'", ')')

Duplicate found by copying your questions title into google. — Sayse, Jan 06 '22 at 16:13
You can `eval` it. But more importantly, why is such a string being created in the first place? — juanpa.arrivillaga, Jan 06 '22 at 16:15

score 0 · Accepted Answer · answered Jan 06 '22 at 16:11

0

You can use the builtin eval() function.

tuple_as_string = "('blood_pressure', '0.99999046')"
tuple_as_tuple = eval(tuple_as_string)
print(tuple_as_tuple)
print(type(tuple_as_tuple))

answered Jan 06 '22 at 16:11

S P Sharan

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Thanks for this I have never heard of eval before, ill have to look into it... – bbartling Jan 06 '22 at 16:25

score 0 · Answer 2 · answered Jan 06 '22 at 16:15

0

If you don't want to use eval, as it is inherently unsecure this is also possible, even though not as elegant:

s = "('blood_pressure', '0.99999046')"
s.replace("(","").replace(")","").replace("'","").split(",")
['blood_pressure', ' 0.99999046']

answered Jan 06 '22 at 16:15

FloLie

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I know this is an old comment, but just as a shortcut, you could use `s.strip("()'")` instead of the multiple calls to `replace`. – hyit Jun 06 '23 at 11:48

Python convert a string to tuple

2 Answers2