Mar 16, 2018 · Using of boolean flag in python. 2. Using booleans in Python. 0. Boolean in python. Hot Network Questions ...

Mar 26, 2015 · I want to use a boolean to select the columns with more than 4000 entries from a dataframe comb which has over 1,000 columns. This expression gives me a Boolean (True/False) result: criteria = comb.ix[:,'c_0327':].count()>4000 I want to use it to select only the True columns to a new Dataframe.

Python's and, or and not logical operators are designed to work with scalars. So Pandas had to do one better and override the bitwise operators to achieve a vectorized (element-wise) version of this functionality. So the following in Python (where exp1 and exp2 are expressions which evaluate to a boolean result)...

Dec 8, 2013 · Which is using python's operator chaining to mean: does the valuee of ii anded with 5 equal both i and 10. Obviously this will never be true. You would actually get (seemingly) the right answer if you had included brackets to force the precedence, so:

Dec 2, 2012 · Does while swag - check if swag exists or if swag is True. It checks if swag is True (or "truthy", I should say).). And yes, the loop will exit after 3 iterations because i=i+1 must be executed 3 times until i == 3 and (by the if-statement) swag is …

I have a boolean mask array a of length n: a = np.array([True, True, True, False, False]) I have a 2d array with n columns: b = np.array([[1,2,3,4,5], [1,2,3,4,5]]) I want a new array which conta...

It made me wonder though about simply inverting a boolean value in general. It turns out the accepted solution here works as one liner, and there's another one-liner that works as well. Assuming you have a variable "n" that you know is a boolean, the easiest ways to …

Aug 6, 2016 · The boolean operators include (but are not limited to) &, | which can combine your masks based on either an 'and' operation or an 'or' operation. In your specific case, you need an 'and' operation. In your specific case, you need an 'and' operation.

Nov 12, 2010 · I'm trying to get this rock paper scissors game to either return a Boolean value, as in set player_wins to True or False, depending on if the player wins, or to refactor this code entirely so that it doesn't use a while loop. I'm coming from the sysadmin side of the world, so please be gentle if this is written in the wrong style.

Sep 13, 2023 · Note that this is pseudo-code not Python code. In Python you cannot create functions called and or or because these are keywords. Also you should never use "evaluate" or if bool(...). Customizing the behavior of your own classes. This implicit bool call can be used to customize how your classes behave with and, or and not.