how can I convert a text to float in python? - python-3.5

Question

I will import exchange rate from a site and I will use exchange rate to calculate.I have no problem about importing.But I will import exchange rate as string.I must convert string to float to calculate.But I couldn't.I don't know where problem is.Section of Show some code is just a instance.It has same problem.
I will use data for calculation with exchange rate.
import requests
from bs4 import BeautifulSoup
url = "https://www.bloomberght.com"
response = requests.get(url)
icerik = response.content
soup = BeautifulSoup(icerik, "html.parser")
liste = []
liste2=[]
for i in soup.find_all("div", {"class", "line2"}):
i =i.text
liste.append(i.strip())
A=8*float(liste[2])
print(A)
Traceback (most recent call last):
File "C:/Users/proin/PycharmProjects/software222/BBBBBBB.py", line 15, in
A=8*float(liste[2])
ValueError: could not convert string to float: '6,5827'
Process finished with exit code 1

Answer 1

Use str.replace() to replace , to .. Then the conversion to float will work:
import requests
from bs4 import BeautifulSoup
url = "https://www.bloomberght.com"
response = requests.get(url)
icerik = response.content
soup = BeautifulSoup(icerik, "html.parser")
liste = []
liste2= []
for i in soup.find_all("div", {"class", "line2"}):
i = i.text
liste.append(i.strip().replace(',', '.'))
A=8*float(liste[2])
print(A)
Prints:
52.6456