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# Loading all lines of a file into memory

with open("large_data.txt", "r") as file:
  lines = file.readlines()

  for line in lines:    
    # Processing each line
    pass

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def function():
  print("Start of the function")
  try:
    # ... main code of the function ...
    except Exception as e:
      print(f"Error in function: {e}")
      
def another_function():
  print("Start of the function")
  try:

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# Global variables for a product
product_name = "Product X"
product_price = 100

def display_product():
  print(f"{product_name} costs ${product_price}")

def apply_discount(discount):
  global product_price
  product_price -= discount

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# Repetitive code without functions

print("Processing data for client A")
# ... specific processing for client A ...
print("Saving results for client A")

print("Processing data for client B")
# ... specific processing for client B ...
print("Saving results for client B")

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# Calculating squares of even numbers with an imperative loop
numbers = [1, 2, 3, 4, 5]
even_squares = []
for n in numbers:
  if n % 2 == 0:
    square = n * n
    even_squares.append(square)

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Semantic Commit Messages

See how a minor change to your commit message style can make you a better programmer.

Format: <type>(<scope>): <subject>

<scope> is optional

Example

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from flask import Flask
from flask_sqlalchemy import SQLAlchemy

def create_app(config: str=None):
    app = Flask(__name__, instance_relative_config=True)
    if config is None:
        app.config.from_pyfile('dev.py')
    else:
        logger.debug('Using %s as configuration', config)
        app.config.from_pyfile(config)