CODEWITHSUNDEEP
pythonlist
369
369

Reputation: 11

Converting string to a list of floats

In python, I currently have the following:

s = '(num1, num2)'

I am wondering how I could convert this to a list with float values so that the format is as follows:

s = [ num1, num2 ]

What are possible ways to do this, preferably without having to import anything. Thank you in advance!

Upvotes: 1

Views: 56

Answers (3)

R. Marolahy
R. Marolahy

Reputation: 1586

You can also try the built-in-function in python eval():

eval('(1e19, -23.430)')

or use regex:

import re
s_in =  '(1e19, -23.430)'
s_out = [float(s) for s in re.findall(r"\d+[e]\d+|[-+]\d+\.\d+|\d+", s_in)]
print(s_out)

output:

[1e+19, -23.43]

Upvotes: 0

A.M. Ducu
A.M. Ducu

Reputation: 900

This should work:

in_string = '(100, 200)'.replace('(', '').replace(')', '')
out = list(map(float, in_string.split(',')))

Take initial string input and use .replace to replace ( and ) with nothing. Then, make an output list consisting of a map that makes each element of input.split(',') (which is a list of elements separated by comma) and converts it to float.

Upvotes: 0

Corralien
Corralien

Reputation: 120429

Use ast.literal_eval:

import ast

s = '(1e19, -23.430)'

>>> ast.literal_eval(s)
(1e+19, -23.43)

Upvotes: 1

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