check pandas variable type

[cools0607]

Oh! I just got a lesson by isinstance this function.
Thank for your assistance.

you compare type of the object with str object - that's why it's false.
As per the docs and also PEP8 recommendation, the isinstance() built-in function is recommended for testing the type of an object, because it takes subclasses into account.

import pandas as pd
 
spam = [1,2,3]
df = pd.DataFrame(spam)

# better use isinstance()
print(isinstance(df, pd.DataFrame))
print(isinstance(spam, list))