Comparing boolean and int using isinstance
Can someone give me an explanation why isinstance() returns True in the following case? I expected False, when writing the code.
boolean
Comparing previous row values in Pandas DataFrame
import pandas as pd data={'col1':[1,3,3,1,2,3,2,2]} df=pd.DataFrame(data,columns=['col1']) print df col1 0 1 1 3 2 3 3 1 4 2 5 3 6 2 7 2 I have the following Pandas DataFrame and I want to create another column that compares the previous row of col1 to see if they are equal. What would be the … Read more
Defining “boolness” of a class in python
Why doesn’t this work as one may have naively expected?
double equals vs is in python
I run the following in the Python interpreter: >>> foo = 10 >>> dir(foo) == dir(10) True >>> dir(foo) is dir(10) False >>> Why is this? Answers: Thank you for visiting the Q&A section on Magenaut. Please note that all the answers may not help you solve the issue immediately. So please treat them as … Read more
Python AND operator on two boolean lists – how?
I have two boolean lists, e.g.,
What does an ‘x = y or z’ assignment do in Python?
Why do we see Python assignments with or? For example: def my_function(arg_1=None, arg_2=0): determination = arg_1 or arg_2 or 'no arguments given!' print(determination) return determination When called with no arguments, the above function would print and return ‘no arguments given!’ Why does Python do this, and how can one best make best use of this … Read more
Why is ‘True == not False’ a SyntaxError?
Comparing boolean values with == works in Python. But when I apply the boolean not operator, the result is a syntax error: