python – How to check if type of a variable is string?

python – How to check if type of a variable is string?

In Python 2.x, you would do

isinstance(s, basestring)

basestring is the abstract superclass of str and unicode. It can be used to test whether an object is an instance of str or unicode.


In Python 3.x, the correct test is

isinstance(s, str)

The bytes class isnt considered a string type in Python 3.

I know this is an old topic, but being the first one shown on google and given that I dont find any of the answers satisfactory, Ill leave this here for future reference:

six is a Python 2 and 3 compatibility library which already covers this issue. You can then do something like this:

import six

if isinstance(value, six.string_types):
    pass # Its a string !!

Inspecting the code, this is what you find:

import sys

PY3 = sys.version_info[0] == 3

if PY3:
    string_types = str,
else:
    string_types = basestring,

python – How to check if type of a variable is string?

In Python 3.x or Python 2.7.6

if type(x) == str:

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