Question

in python I have a list of strings, some contain purely numbers while others are dates, names, etc. I am trying to convert the strings containing only numbers into floats. this is the code I am using but it alwyas returns nothing. Python just says restart and nothing goes through. how can I get my code to do what I want?

f = open('GOOG-HistoricalQuotest.txt','r+')
ff=f.readlines()
clean = []
lst = []
for i in range(2,len(ff)+1):
try:
[float(i) for i in ff]
print(ff[i])
except:
ValueError

Answer 1

import re
with open('GOOG-HistoricalQuotest.txt?') as f:
    content = f.readlines()
content = [x.strip() for x in content]
clean = []
lst = []
for i in content:
    if not re.match("^\d+?\.\d+?$", i) is None:
        lst.append(float(i))
print(lst)

**Comment for any further queries.