python

[Solved] Find a part of a string using python? [closed]

by

x=re.search(‘(?<=abc).*(?=ghi)’,’abcdefghi’).group(0) print(x) output def Explanation Regex (?<=abc) #Positive look behind. Start match after abc .* #Collect everything that matches the look behind and look ahead conditions (?=ghi) #Positive look ahead. Match only chars that come before ghi re.search documentation here. A Match Object is returned by re.search. A group(0) call on it would return the … Read more

[Solved] Class constructor able to init with an instance of the same class object

by

Not sure what you’re trying to achieve, but technically your error is here: self = kwargs.get(‘object’,self) There’s nothing magic with self, it’s just a function argument, and as such a local variable, so rebinding it within the function will only make the local name self points to another object within the function’s scope. It’s in … Read more

[Solved] What is the use of iter in python?

by

First of all: iter() normally is a function. Your code masks the function by using a local variable with the same name. You can do this with any built-in Python object. In other words, you are not using the iter() function here. You are using a for loop variable that happens to use the same … Read more

(Solved) Type Object has no attribute

by

You have three class attributes: RANKS, SUITS and BACK_Name. class Card: # Class Attributes: RANKS = (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13) SUITS = (‘s’, ‘c’,’d’,’h’) BACK_Name = “DECK/b.gif” You haven’t defined fileName as a class attribute so trying to get an attribute named fileName will raise an … Read more

(Solved) How to read each line in an input text file and determine if each line is true or false?

by

Since idk how to format things in comments if thats a thing, heres what i have now. @achampion def readline(lines): if lines in strings: return True else: return False with open(‘output.txt’, ‘w+’) as output_file: with open(‘input.txt’, ‘r’) as input_file: for lines in input_file: if readline(lines) == True: output_file.write(‘True\n’) print(‘true’) else: output_file.write(‘False\n’) print(‘false’) 2 solved How … Read more

(Solved) How to make good reproducible pandas examples

by

Note: The ideas here are pretty generic for Stack Overflow, indeed questions. Disclaimer: Writing a good question is hard. The Good: do include small* example DataFrame, either as runnable code: In [1]: df = pd.DataFrame([[1, 2], [1, 3], [4, 6]], columns=[‘A’, ‘B’]) or make it “copy and pasteable” using pd.read_clipboard(sep=’\s\s+’), you can format the text … Read more

(Solved) What does if __name__ == “__main__”: do?

by

Short Answer It’s boilerplate code that protects users from accidentally invoking the script when they didn’t intend to. Here are some common problems when the guard is omitted from a script: If you import the guardless script in another script (e.g. import my_script_without_a_name_eq_main_guard), then the latter script will trigger the former to run at import … Read more

(Solved) What does the “yield” keyword do?

by

To understand what yield does, you must understand what generators are. And before you can understand generators, you must understand iterables. Iterables When you create a list, you can read its items one by one. Reading its items one by one is called iteration: >>> mylist = [1, 2, 3] >>> for i in mylist: … Read more

[Solved] What request should I make to get the followers list from a specific profile page

by

Try this: import time import requests link = ‘https://api-mainnet.rarible.com/marketplace/api/v4/followers’ params = {‘user’: ‘0xe744d23107c9c98df5311ff8c1c8637ec3ecf9f3’} payload = {“size”: 20} with requests.Session() as s: s.headers[‘User-Agent’] = ‘Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.150 Safari/537.36’ res = s.post(link,params=params,json=payload) for item in res.json(): print(item[‘owner’][‘name’]) 1 solved What request should I make to get the followers list from a … Read more