Is it possible to split a string and to avoid the quotes(single)?
I would like to remove the single quotes from a list(keep the list, strings and floats inside:
l=['1','2','3','4.5']
desired output:
l=[1, 2, 3, 4.5]
next line works neither with int nor float
l=[float(value) for value in ll]
To get int or float based on what each value looks like, so '1' becomes 1 and "1.2" becomes 1.2, you can use ast.literal_eval to convert the same way Python's literal parser does, so you have an actual list of ints and floats, rather than a list of str (that would include the quotes when echoed):
>>> import ast
>>> [ast.literal_eval(x) for x in l]
[1, 2, 3, 4.5]
Unlike plain eval, this doesn't open security holes since it can't execute arbitrary code.
You could use map for a mild performance boost here (since ast.literal_eval is a built-in implemented in C; normally, map gains little or loses out to list comprehensions), in Py 2, map(ast.literal_eval, l) or in Py3 (where map returns a generator, not a list), list(map(ast.literal_eval, l))
If the goal is purely to display the strings without quotes, you'd just format manually and avoid type conversions entirely:
>>> print('[{}]'.format(', '.join(l)))
[1, 2, 3, 4.5]