How do I concatenate two lists in Python?

How do I concatenate two lists in Python? Example: listone = [1, 2, 3] listtwo = [4, 5, 6] Expected outcom

Tana

0 1 0 9

asked 07 September, 2021

How can I add new keys to a dictionary?

Is it possible to add a key to a Python dictionary after it has been created? It doesn't seem to have an

Venice

0 1 0 9

asked 07 September, 2021

What is the difference between __str__ and __repr__?

What is the difference between __str__ and __repr__ in Python?

Nereida

0 1 0 9

asked 07 September, 2021

Catch multiple exceptions in one line (except block)

I know that I can do: try: # do something that may fail except: # do this if ANYTHING goes wrong I

Chaya

0 1 0 9

asked 07 September, 2021

How do I sort a dictionary by value?

Shanita

0 1 0 9

asked 07 September, 2021

Using global variables in a function

How can I create or use a global variable in a function? If I create a global variable in one function, how c

Leonardo

0 1 0 9

asked 07 September, 2021

How do I list all files of a directory?

Alphonso

0 1 0 9

asked 07 September, 2021

Does Python have a string 'contains' substring method?

Arline

0 1 0 9

asked 07 September, 2021

Iterating over dictionaries using 'for' loops

I am a bit puzzled by the following code: d = {'x': 1, 'y': 2, 'z': 3} for key

Hilario

0 1 0 9

asked 07 September, 2021

Understanding slice notation

I need a good explanation (references are a plus) on Python's slice notation. To me, this notation need

Arline

0 1 0 9

asked 07 September, 2021

Difference between staticmethod and classmethod

What is the difference between a function decorated with @staticmethod and one decorated with @classmethod?

Chaya

0 1 0 9

asked 07 September, 2021

How can I safely create a nested directory in Python?

What is the most elegant way to check if the directory a file is going to be written to exists, and if not, cr

Dorian

0 1 0 9

asked 07 September, 2021

How to execute a program or call a system command?

How do you call an external command (as if I'd typed it at the Unix shell or Windows command prompt) from

Dusty

0 1 0 9

asked 07 September, 2021

How do I merge two dictionaries in a single expression (taking union of dictionaries)?

I have two Python dictionaries, and I want to write a single expression that returns these two dictionaries, m

Thurman

0 1 0 9

asked 07 September, 2021

What are metaclasses in Python?

In Python, what are metaclasses and what do we use them for?

Boyd

0 1 0 9

asked 07 September, 2021

Does Python have a ternary conditional operator?

If Python does not have a ternary conditional operator, is it possible to simulate one using other language co

Mikki

0 1 0 9

asked 07 September, 2021

What does if __name__ == "__main__": do?

Given the following code, what does the if __name__ == "__main__": do? # Threading example import time, threa

Trudy

0 1 0 9

asked 07 September, 2021

What does the "yield" keyword do?

Daniel

0 1 0 9

asked 07 September, 2021

Wordpress keeps redirecting to install-php after migration

Here's my situation. I have followed the exact instructions on wordpress codex page about moving a site t

Daniel

0 1 0 9

asked 07 September, 2021

WooCommerce: Finding the products in database

I'm creating a website using WooCommerce and I want to restrict the available products to users depending

Scot

0 1 0 9

asked 07 September, 2021