Python learning

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✅Python Interview Questions with Answers 🧑‍💻👩‍💻 1️⃣ Write a function to remove outliers from a list using IQR.

import numpy as np

def remove_outliers(data):
    q1 = np.percentile(data, 25)
    q3 = np.percentile(data, 75)
    iqr = q3 - q1
    lower = q1 - 1.5 * iqr
    upper = q3 + 1.5 * iqr
    return [x for x in data if lower <= x <= upper]

2️⃣ Convert a nested list to a flat list.

nested = [[1, 2], [3, 4],]
flat = [item for sublist in nested for item in sublist]

3️⃣ Read a CSV file and count rows with nulls.

import pandas as pd

df = pd.read_csv('data.csv')
null_rows = df.isnull().any(axis=1).sum()
print("Rows with nulls:", null_rows)

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import tkinter as tk from time import strftime def update_time(): current_time = strftime("%I:%M:%S %p") label.config(text=current_time) label.after(1000, update_time) # Create the main window root = tk.Tk() root.title("Digital Clock") label = tk.Label(root, font=("Calibri", 40, "bold"), background="blue", foreground="white") label.pack(anchor="center") # Start the clock update_time() # Run the application root.mainloop()

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