How to convert dictionary keys string to variables(parameters) in python?

Question

my problem is that I need a some variables and parameters which are in string form in dictionary and the values are in both shape (string and integer) For example :

d={'a6':'36','a21':52}

Now I want these to use them in next steps in some math formulas:

a6=36.0
a21=52.0

Is there anyway to change those keys which are in string forms to these variables?

The input data structure, i.e. a dictionary, is precisely the ideal one for what you want — yatu, Jul 03 '19 at 10:10

score 0 · Answer 1 · answered Jul 03 '19 at 10:10

0

You could just do:

for key,val in d.items():
    vars()[key] = int(val)

>> a6
36

answered Jul 03 '19 at 10:10

Nakor

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Hmm... why don't I like this? – Peter Wood Jul 03 '19 at 10:12
I would also keep the dictionary, but if he really needs to have access to the variables directly, it's one way to do it. – Nakor Jul 03 '19 at 10:14

score 0 · Answer 2 · answered Jul 03 '19 at 10:17

0

You can do it in a single line with:

>>> d = {'a': 1, 'b': 2}
>>> locals().update(d)
>>> a
1

or:

>>> d = {'a':1, 'b':2}
>>> for key,val in d.items():
        exec(key + '=val')

#list(map(exec, ("{0}={1}".format(x[0],x[1]) for x in d.items())))

answered Jul 03 '19 at 10:17

ncica

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score -1 · Answer 3 · answered Jul 03 '19 at 10:14

-1

Try:

for k, v in d.items():
    exec("%s = %s" % (k, v))

Please note that using exec (or eval) can create a substantial security risk if you don't have complete control over the inputs.

answered Jul 03 '19 at 10:14

Rahul Raut

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8
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How to convert dictionary keys string to variables(parameters) in python?

3 Answers3