Python Tricks

#!pip install emoji
from emoji import emojize 
print(emojize(":thumbs_up: Python is awesome! :grinning_face:"))

Data Extraction

#!pip install newspaper3k
from newspaper import Article
from IPython.display import display, Markdown


urls = ["http://cnn.com/2023/03/29/entertainment/the-mandalorian-episode-5-recap/index.html", 
        "https://www.cnn.com/2023/06/09/entertainment/jurassic-park-anniversary/index.html"]

for url in urls:
    article = Article(url)
    article.download()
    article.parse()
    # Jupyter Notebook Display
    # print(article.title)
    display(Markdown(article.title)) # Jupyter display only
    display(Markdown(article.text)) # Jupyter display only
    print("\n")

#!pip install wikipedia
import wikipedia 
from IPython.display import display, Markdown # add for Jupyter

terms = ["Python (programming language)", "JavaScript"]
for term in terms:
    # Search for a page 
    result = wikipedia.search(term)
    # Get the summary of the first result
    summary = wikipedia.summary(result[0])
    print(term) 
    # print(summary) # console display
    display(Markdown(summary)) # Jupyter display

Inspecting a Function

import inspect 
from newspaper import Article

# inspect newspaper Article function
print(inspect.getsource(Article))

Python Data Types

from typing import Union

# Define types for mean function, trying to analyze input possibilities
Number = Union[int, float]  # Number can be either int or float type
Numbers = list[Number] # Numbers is a list of Number types
Scores = Union[Number, Numbers] # Scores can be single or multiple 

def mean(scores: Scores, method: int = 1) -> float:
    """
    Calculate the mean of a list of scores.
    
    Average and Average2 are hidden functions performing mean algorithm

    If a single score is provided in scores, it is returned as the mean.
    If a list of scores is provided, the average is calculated and returned.
    """
    
    def average(scores): 
        """Calculate the average of a list of scores using a Python for loop with rounding."""
        sum = 0
        len = 0
        for score in scores:
            sum += score
            len += 1
        return sum / len
    
    def average2(scores):
        """Calculate the average of a list of scores using the built-in sum() function with rounding."""
        return sum(scores) / len(scores)

    # test to see if scores is  a list of numbers
    if isinstance(scores, list):
        if method == 1:  
            # long method
            result = average(scores)
        else:
            # built in method
            result = average2(scores)
        return round(result + 0.005, 2)
    
    return scores # case where scores is a single valu

# define a list of numbers
tests = [90.5, 100, 85.4, 88]

print("Print test data")
print(tests)

print()

print("Average score, long method")
print(mean(tests))

print("Average score, short method")
print(mean(tests, 2))

Python Tricks • 6 min read

Data Extraction

Inspecting a Function

Python Data Types