Convert string to list of tuples in python-CodePudding

I have a string that looks like this:

string = "(a1, a2), (b1, b2), (c1, c2), ..."

and I want to convert it to a list of tuples, like so

result = [('a1', 'a2'), ('b1', 'b2'), ('c1', 'c2'), ...]

My initial idea was to add quotation marks to every a1, a2, b1, etc, and then apply the eval function to the result. But I am kind stuck, since each a1, a2, b1 can be any string. Can someone help me out, please.

CodePudding user response：

assuming your inside strings don't have ',' or '()', and there is a space after comma.. this works

import re
string = "(a1, a2), (b1, b2), (c1, c2)"
print( [tuple(string.split(', ')) for string in re.findall("\(([^\)]*)\)", string)] )

Output:

[('a1', 'a2'), ('b1', 'b2'), ('c1', 'c2')]

CodePudding user response：

That would also work, in case you didn't want to import library

string = "(a1, a2), (b1, b2), (c1, c2)"
string = string.replace('), ', ');')
list = list(string.split(';'))
list_tuple = []
for tem in list:
    tem = tem.replace('(', '')
    tem = tem.replace(')', '')
    tem = tem.replace(' ', '')
    tem1 = tuple(tem.split(','))
    list_tuple.append(tem1)
print(list_tuple)

Output:

[('a1', 'a2'), ('b1', 'b2'), ('c1', 'c2')]