#in python

[undertheinterstate]

just started learning how to make GUIs

[winmundo]

In python, how can I print lines that do NOT contain a certain string, rather than print lines which DO contain a certain string:

Youre asking whether the expression (StatusRequest or StatusResponse) appears in line. But that expression is just the same thing as StatusRequest.

Put it in English: youre not trying to say if neither of these is in line. Python doesnt have a neither/none function, but it does have an any function, so you can do this:

[winmundo]

In python, how can I print lines that do NOT contain a certain string, rather than print lines which DO contain a certain string:

Youre asking whether the expression (StatusRequest or StatusResponse) appears in line. But that expression is just the same thing as StatusRequest.

Put it in English: youre not trying to say if neither of these is in line. Python doesnt have a neither/none function, but it does have an any function, so you can do this:

[ngodingkode-blog-blog]

Best way to handle list.index(might-not-exist) in python?

Best way to handle list.index(might-not-exist) in python?

I have code which looks something like this:

thing_index = thing_list.index(thing) otherfunction(thing_list, thing_index)

ok so that’s simplified but you get the idea. Now thing might not actually be in the list, in which case I want to pass -1 as thing_index. In other languages this is what you’d expect index() to return if it couldn’t find the element. In fact it throws a ValueError.

I could…

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[ngodingkode-blog-blog]

Divide a list into 3 parts in python [duplicate]

Divide a list into 3 parts in python [duplicate]

This question already has an answer here:

splitting a list of arbitrary size into only roughly N-equal parts 10 answers

I am looking to divide a list into 3 parts in python. If the list doesn’t divide by 3, I would like it to ‘fill’ the first column then the second, then the third.

e.g:

1|2|3 1|3| 2| 1|3| 2|4| 1|3|5 2|4| 1|3|5 2|4|6

And so on.

I am…

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[ngodingkode-blog-blog]

Discovering a class's metaclass in Python 3

Discovering a class’s metaclass in Python 3

In Python 2, I could check a class’s __metaclass__ attribute to discover its metaclass. How do I the same thing in Python 3?

Best Answer

Use the single-argument type function (type(class)), or just access class.__class__. Both of these work in Python 2, btw.

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[ngodingkode-blog-blog]

Basics of Object Oriented Programming in Python

Basics of Object Oriented Programming in Python

Object Oriented Programming in Python Object

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