


import importlib.metadata
import operator
import re
import sys
from typing import Optional

from packaging import version


_snake_case             =     {
    '''<''': operator.lt,
    '''<=''': operator.le,
    '''==''': operator.eq,
    '''!=''': operator.ne,
    '''>=''': operator.ge,
    '''>''': operator.gt,
}






def 		lowercase_(  SCREAMING_SNAKE_CASE_      ,						SCREAMING_SNAKE_CASE_      ,						SCREAMING_SNAKE_CASE_      ,						SCREAMING_SNAKE_CASE_      ,						SCREAMING_SNAKE_CASE_      ,						SCREAMING_SNAKE_CASE_	):


  '''simple docstring'''

  if got_ver is None or want_ver is None:
    raise ValueError(
        f"""Unable to compare versions for {requirement}: need={want_ver} found={got_ver}. This is unusual. Consider"""
        f""" reinstalling {pkg}."""	)
  if not ops[op](version.parse(lowerCAmelCase_	)      ,						version.parse(lowerCAmelCase_	)	):
    raise ImportError(
        f"""{requirement} is required for a normal functioning of this module, but found {pkg}=={got_ver}.{hint}"""	)






def 		lowercase_(  SCREAMING_SNAKE_CASE_      ,						SCREAMING_SNAKE_CASE_ = None	):


  '''simple docstring'''

  lowerCamelCase :					Optional[int]    =				f"""\n{hint}""" if hint is not None else ""

  # non-versioned check
  if re.match(r"^[\w_\-\d]+$"      ,						lowerCAmelCase_	):
    lowerCamelCase    ,	lowerCamelCase    ,	lowerCamelCase :					Tuple    =				requirement, None, None
  else:
    lowerCamelCase :					Optional[int]    =				re.findall(r"^([^!=<>\s]+)([\s!=<>]{1,2}.+)"      ,						lowerCAmelCase_	)
    if not match:
      raise ValueError(
          "requirement needs to be in the pip package format, .e.g., package_a==1.23, or package_b>=1.23, but"
          f""" got {requirement}"""	)
    lowerCamelCase    ,	lowerCamelCase :					List[str]    =				match[0]
    lowerCamelCase :					List[Any]    =				want_full.split(","	)  # there could be multiple requirements
    lowerCamelCase :					List[Any]    =				{}
    for w in want_range:
      lowerCamelCase :					Optional[int]    =				re.findall(r"^([\s!=<>]{1,2})(.+)"      ,						lowerCAmelCase_	)
      if not match:
        raise ValueError(
            "requirement needs to be in the pip package format, .e.g., package_a==1.23, or package_b>=1.23,"
            f""" but got {requirement}"""	)
      lowerCamelCase    ,	lowerCamelCase :					Dict    =				match[0]
      lowerCamelCase :					Tuple    =				want_ver
      if op not in ops:
        raise ValueError(f"""{requirement}: need one of {list(ops.keys()	)}, but got {op}"""	)

    # special case
  if pkg == "python":
    lowerCamelCase :					str    =				".".join([str(lowerCAmelCase_	) for x in sys.version_info[:3]]	)
    for op, want_ver in wanted.items():
      _compare_versions(lowerCAmelCase_      ,						lowerCAmelCase_      ,						lowerCAmelCase_      ,						lowerCAmelCase_      ,						lowerCAmelCase_      ,						lowerCAmelCase_	)
    return

  # check if any version is installed
  try:
    lowerCamelCase :					int    =				importlib.metadata.version(lowerCAmelCase_	)
  except importlib.metadata.PackageNotFoundError:
    raise importlib.metadata.PackageNotFoundError(
        f"""The '{requirement}' distribution was not found and is required by this application. {hint}"""	)

  # check that the right version is installed if version number or a range was provided
  if want_ver is not None:
    for op, want_ver in wanted.items():
      _compare_versions(lowerCAmelCase_      ,						lowerCAmelCase_      ,						lowerCAmelCase_      ,						lowerCAmelCase_      ,						lowerCAmelCase_      ,						lowerCAmelCase_	)







def 		lowercase_(  SCREAMING_SNAKE_CASE_	):


  '''simple docstring'''

  lowerCamelCase :					int    =				"Try: pip install transformers -U or pip install -e '.[dev]' if you're working with git main"
  return require_version(lowerCAmelCase_      ,						lowerCAmelCase_	)







"""simple docstring"""







import math
import random




def    UpperCAmelCase__       (lowerCAmelCase_  ,						lowerCAmelCase_ = False   ):




					'''simple docstring'''


					if deriv:
										return value * (1 - value)
					return 1 / (1 + math.exp(-value   ))


# Initial Value
a__				:							Tuple						=     0.02




def    UpperCAmelCase__       (lowerCAmelCase_  ,						lowerCAmelCase_   ):




					'''simple docstring'''


					__SCREAMING_SNAKE_CASE						   =				float(2 * (random.randint(1  ,						100   )) - 1   )

					for _ in range(lowerCAmelCase_   ):
										# Forward propagation
										__SCREAMING_SNAKE_CASE						   =				sigmoid_function(INITIAL_VALUE * weight   )
										# How much did we miss?
										__SCREAMING_SNAKE_CASE						   =				(expected / 100) - layer_a
										# Error delta
										__SCREAMING_SNAKE_CASE						   =				layer_1_error * sigmoid_function(lowerCAmelCase_  ,						lowerCAmelCase_   )
										# Update weight
										weight += INITIAL_VALUE * layer_1_delta

					return layer_a * 100


if __name__ == "__main__":
		import doctest

		doctest.testmod()

		a__				:							List[str]						=     int(input('''Expected value: '''))
		a__				:							str						=     int(input('''Number of propagations: '''))
		print(forward_propagation(expected, number_propagations))
