Convert string into float python properly

Question

I am trying to convert the following string into float: u'"0.5"' but it seems that it does not work. I am trying to use float(str1) and I am receiving the following error:

ValueError: could not convert string to float: "0.5"

It seems is the way that I have stored the string. But how can I convert it into a float properly?

Don't you need to remove the rabbit's ears yourself?

Bathsheba
– Bathsheba

2017-02-06 12:19:29 +00:00
Commented Feb 6, 2017 at 12:19 — Bathsheba
– Bathsheba, Commented Feb 6, 2017 at 12:19
float(str1.strip('"'))

jbndlr
– jbndlr

2017-02-06 12:20:16 +00:00
Commented Feb 6, 2017 at 12:20 — jbndlr
– jbndlr, Commented Feb 6, 2017 at 12:20
float(ast.literal_eval(u'"0.5"'))

Chris_Rands
– Chris_Rands

2017-02-06 12:23:19 +00:00
Commented Feb 6, 2017 at 12:23 — Chris_Rands
– Chris_Rands, Commented Feb 6, 2017 at 12:23

Squick · Accepted Answer · 2017-02-06 12:34:03Z

1

You try to convert the " " to float, which isn't possible.

This is a step by step code of what you should do :

unicode_value = u'"0.5"'

string_value = str(unicode_value)

float_value = float(string_value.strip('"'))

print float_value

This works without import, but you might as well use the other solution provided before by Shivkumar Kondi.

answered Feb 6, 2017 at 12:34

Squick

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Comments

Shivkumar kondi · Accepted Answer · 2017-02-06 12:26:47Z

0

Try this..

import ast

a = u'"0.5"'
print a,type(a)

b = ast.literal_eval(a)
print b,type(b)

c = float(b)
print c,type(c)

Output :

"0.5" <type 'unicode'>
0.5 <type 'str'>
0.5 <type 'float'>

answered Feb 6, 2017 at 12:26

Shivkumar kondi

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