Pip install hashlib

Python Help
1

здравствуйте не могу установить hashlib на python 3.8.6 пишет ошибку Подготовка метаданных (setup.py) … error
error: subprocess-exited-with-error

× python setup.py egg_info не запустился успешно.

2

Please write in English.

Hashlib has been part of the standard library since python2.5, released in 2006. You don’t need to install it from pypi.

3

Hello, thanks for the answer, that is, I need to use a Python versi lower than Python 3.8.6,? Please advise how to fix this error. raise ValueError(‘“{}” is an invalid base58 encoded character.’.format(char)) from None
ValueError: “” is an invalid base58 encoded character.

4

No, you should not downgrade your python version.

Please post the code that causes this error, along with the full stack trace.

1 Like
5

from collections import deque

from bit.crypto import double_sha256_checksum
from bit.utils import int_to_unknown_bytes

BASE58_ALPHABET = ‘123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz’
BASE58_ALPHABET_LIST = list(BASE58_ALPHABET)
BASE58_ALPHABET_INDEX = {char: index for index, char in enumerate(BASE58_ALPHABET)}

def b58encode(bytestr):

alphabet = BASE58_ALPHABET_LIST

encoded = deque()
append = encoded.appendleft
_divmod = divmod

num = int.from_bytes(bytestr, 'big')

while num > 0:
    num, rem = _divmod(num, 58)
    append(alphabet[rem])

encoded = ''.join(encoded)

pad = 0
for byte in bytestr:
    if byte == 0:
        pad += 1
    else:
        break

return '1' * pad + encoded

def b58encode_check(bytestr):
return b58encode(bytestr + double_sha256_checksum(bytestr))

def b58decode(string):

alphabet_index = BASE58_ALPHABET_INDEX

num = 0

try:
    for char in string:
        num *= 58
        num += alphabet_index[char]
except KeyError:
    raise ValueError('"{}" is an invalid base58 encoded character.'.format(char)) from None

bytestr = int_to_unknown_bytes(num)

pad = 0
for char in string:
    if char == '1':
        pad += 1
    else:
        break

return b'\x00' * pad + bytestr

def b58decode_check(string):

decoded = b58decode(string)
shortened = decoded[:-4]
decoded_checksum = decoded[-4:]
hash_checksum = double_sha256_checksum(shortened)

if decoded_checksum != hash_checksum:
    raise ValueError(
        'Decoded checksum {} derived from "{}" is not equal to hash '
        'checksum {}.'.format(decoded_checksum, string, hash_checksum)
    )

return shortened
6

That’s the base58 module from a package called bit, apparently.

We need to see your own code.