Tem uma extensão para VS Code que cria docstrings rapidamente. São bons para explicações.
Não usei .find() pq continuo achando os outros métodos mais eficientes.
url_extractor.py
class URLExtractor:
"""A class to extract and manipulate URLs containing currency conversion data from bytebank.com."""
origin, destination, amount = None, None, None
def __init__(self, url):
"""Initialize the URLExtractor object and extract the parameters of the input URL."""
self.url = self.sanitize_url(url)
self.validate_url()
self.url_parts = self.url.split("?")
self.parameters = self.extract_parameters()
def sanitize_url(self, url):
"""Remove unwanted characters from the URL."""
return url.replace(" ", "").strip() if type(url) == str else ""
def validate_url(self):
"""Verify that the input URL is valid and contains all required components."""
if not self.url:
print("The URL is empty.")
raise ValueError("The URL is empty.")
elif not self.is_valid_url(self.url):
print("The URL is not valid.")
raise ValueError("The URL is not valid.")
def is_valid_url(self, url):
"""Check if the URL is valid and contains all required components."""
return (
url.startswith("https://bytebank.com") and "cambio" in url and all(
param in url
for param in ["quantidade", "moedaOrigem", "moedaDestino"]))
def get_url_base(self):
"""Return the base URL without parameters."""
return self.url_parts[0]
def get_url_parameters(self):
"""Return the URL parameters as a single string."""
return self.url_parts[1]
def extract_parameters(self):
"""Extract the parameters from the URL as a dictionary."""
url_parameters = self.get_url_parameters()
parameters = url_parameters.split("&")
parameters_dict = {}
for param in parameters:
key, value = param.split("=")
parameters_dict[key] = value
return parameters_dict
def get_parameter(self, key):
"""Get the value of a specific parameter in the URL."""
return self.parameters.get(key, None)
def print_with_newline(self, *args):
"""Print the arguments, ending with a newline character."""
print(*args, end="\n")
main.py
from url_extractor import URLExtractor as Extractor
extracted_parameters = Extractor("https://bytebank.com/cambio?quantidade=190&moedaOrigem=real&moedaDestino=dolar")
quantity_parameter = extracted_parameters.get_parameter("quantidade")
quantity = extracted_parameters.print_with_newline(quantity_parameter)
