python - check if variable is dataframe -

python - check if variable is dataframe -

when function f called variable want check if var pandas dataframe:

def f(var): if var == pd.dataframe(): print "do stuff"

i guess solution might quite simple

def f(var): if var.values != none: print "do stuff"

i can't work expected.

isinstance, nil else.

pep8 says explicitly isinstance preferred way check types

yes: if isinstance(obj, int): no: if type(obj) type(1):

and don't think about

if obj.__class__.__name__ = "myinheritedclass": expect_problems_some_day()

isinstance handles inheritance (see differences between isinstance() , type() in python). example, tell if variable string (either str or unicode), because derive basestring)

if isinstance(obj, basestring): i_am_string(obj)

python pandas