Python initialize strings as variable -


i have calculation schema string 

calc = "((k+m+46)/2)"

and strings containing variable like

m = 2 k = m*2

all strings. want initialize them python. goal calculate calculating schema varible values.

calc should return 26

edit:

i try exec vars in cases have exec k = m*2 @ first , error m not defined!

#!/usr/bin/python  m = 2 k = m*2 calc = "((k+m+46)/2)"  result = eval(calc)  print result

result

26

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