python - How to parse tuple data in one line -

i have take user input in 1 line in form:

c = (39.447; 94.657; 11.824) n = (39.292; 95.716; 11.027) ca = (39.462; 97.101; 11.465)

and have translate have 3 variables each corresponding appropriate tuple. complicated semi colons , fact has on 1 line.

this have far i'm having trouble parsing 1 line, thought eval() might work because input resembles variable assignment "syntaxerror can't assign literal". feel there should simple way this.

class tupleclean(str):     def clean(self):         new_list = []         clean_coord = self.strip("() ")         split_coord = clean_coord.split(";")         in split_coord:             new_list.append(float(i))         tuple_coord = (new_list[0], new_list[1], new_list[2])         return(tuple_coord)  coord_1 = input("input coordinates carbon in format (p; q; r): ") coord_2 = input("input coordinates nitrogen in format (p; q; r): ") coord_3 = input("input coordinates calcium in format (p; q; r): ")  coord_1_clean = tupleclean(coord_1) coord_1_clean = coord_1_clean.clean() coord_2_clean = tupleclean(coord_2) coord_2_clean = coord_2_clean.clean() coord_3_clean = tupleclean(coord_3) coord_3_clean = coord_3_clean.clean() 

the constructor of tuple class can take iterable argument:

class tupleclean(str):     def clean(self):         new_list = []         clean_coord = self.strip("() ")         return tuple(map(float, clean_coord.split(";"))) 

(map applies function float each item of list clean_coord.split(";"))