

from datetime import datetime

import requests
from bsa import BeautifulSoup

if __name__ == "__main__":
						lowerCAmelCase							:  Tuple   	=						input("""Enter image url: """).strip()
						print(f'''Downloading image from {url} ...''')
						lowerCAmelCase							:  Dict   	=						BeautifulSoup(requests.get(url).content, """html.parser""")
						# The image URL is in the content field of the first meta tag with property og:image
						lowerCAmelCase							:  List[str]   	=						soup.find("""meta""", {"""property""": """og:image"""})["""content"""]
						lowerCAmelCase							:  List[Any]   	=						requests.get(image_url).content
						lowerCAmelCase							:  List[str]   	=						f'''{datetime.now():%Y-%m-%d_%H:%M:%S}.jpg'''
						with open(file_name, """wb""") as fp:
												fp.write(image_data)
						print(f'''Done. Image saved to disk as {file_name}.''')









def 			A_      (    _UpperCAmelCase				,	_UpperCAmelCase				,	_UpperCAmelCase				,	_UpperCAmelCase				,	_UpperCAmelCase				,	):
						SCREAMING_SNAKE_CASE_: Optional[int]  		=       [redshift, radiation_density, matter_density, dark_energy]
						if any(p < 0 for p in parameters    ):
												raise ValueError("All input parameters must be positive"    )

						if any(p > 1 for p in parameters[1:4]    ):
												raise ValueError("Relative densities cannot be greater than one"    )
						else:
												SCREAMING_SNAKE_CASE_: int  		=       1 - (matter_density + radiation_density + dark_energy)

												SCREAMING_SNAKE_CASE_: Dict  		=       (
												    radiation_density * (redshift + 1) ** 4
												    + matter_density * (redshift + 1) ** 3
												    + curvature * (redshift + 1) ** 2
												    + dark_energy
												)

												SCREAMING_SNAKE_CASE_: Any  		=       hubble_constant * e_a ** (1 / 2)
												return hubble


if __name__ == "__main__":
						import doctest

						# run doctest
						doctest.testmod()

						# demo LCDM approximation
						lowerCAmelCase							:  List[Any]   	=						0.3

						print(
						    hubble_parameter(
						        hubble_constant=68.3,
						        radiation_density=1E-4,
						        matter_density=matter_density,
						        dark_energy=1 - matter_density,
						        redshift=0,
						    )
						)






