pythonlisttuplesisinstance

How to separate a list into two lists according to the objects' types using isinstance()?

With a list like this: ["apple", "orange", 5, "banana", 8, 9]

How can I put the string(str) in one list and put integer(int) in another list using isinstance()?

Solution

  • Use list comprehensions:

    lst = ["apple", "orange", 5, "banana", 8, 9]
strings = [s for s in lst if isinstance(s, str)]
integers = [n for n in lst if isinstance(n, int)]

    Or, to avoid using two for loops, you could also just loop over the list and append to the respective lists as needed:

    strings = list()
integers = list()

for l in lst:
    if isinstance(l, str):
        strings.append(l)
    elif isinstance(l, int):
        integers.append(l)